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4000004000 = 25531019901
BaseRepresentation
bin1110111001101011…
…0011011110100000
3101022202201020221022
43232122303132200
531143000112000
61500525545012
7201060321146
oct35632633640
911282636838
104000004000
111772997233
12937715168
134b9923495
1429d355596
15186276585
hexee6b37a0

4000004000 has 96 divisors (see below), whose sum is σ = 9926319312. Its totient is φ = 1584000000.

The previous prime is 4000003963. The next prime is 4000004023. The reversal of 4000004000 is 4000004.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1918089616 + 2081914384 = 43796^2 + 45628^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399050 + ... + 408950.

Almost surely, 24000004000 is an apocalyptic number.

4000004000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4000004000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4963159656).

4000004000 is an abundant number, since it is smaller than the sum of its proper divisors (5926315312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4000004000 is a wasteful number, since it uses less digits than its factorization.

4000004000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10027 (or 10009 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 4000004000 is about 63245.5848261363. The cubic root of 4000004000 is about 1587.4015811017.

Adding to 4000004000 its reverse (4000004), we get a palindrome (4004004004).

4000004000 divided by its reverse (4000004) gives a cube (1000 = 103).

It can be divided in two parts, 400000 and 4000, that multiplied together give a 4-th power (1600000000 = 2004).

The spelling of 4000004000 in words is "four billion, four thousand", and thus it is an eban number.

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 101 125 160 200 202 250 400 404 500 505 800 808 1000 1010 1616 2000 2020 2525 3232 4000 4040 5050 8080 9901 10100 12625 16160 19802 20200 25250 39604 40400 49505 50500 79208 80800 99010 101000 158416 198020 202000 247525 316832 396040 404000 495050 792080 990100 1000001 1237625 1584160 1980200 2000002 2475250 3960400 4000004 4950500 5000005 7920800 8000008 9901000 10000010 16000016 19802000 20000020 25000025 32000032 39604000 40000040 50000050 80000080 100000100 125000125 160000160 200000200 250000250 400000400 500000500 800000800 1000001000 2000002000 4000004000