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40008801 = 371905181
BaseRepresentation
bin1001100010011…
…1110001100001
32210021122202110
42120213301201
540220240201
63545305533
7664032510
oct230476141
983248673
1040008801
1120647228
12114952a9
13839a861
145456677
1537a46d6
hex2627c61

40008801 has 8 divisors (see below), whose sum is σ = 60965824. Its totient is φ = 22862160.

The previous prime is 40008779. The next prime is 40008811. The reversal of 40008801 is 10880004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40008801 - 29 = 40008289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1905181 = 40008801 / (4 + 0 + 0 + 0 + 8 + 8 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40008811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 952570 + ... + 952611.

It is an arithmetic number, because the mean of its divisors is an integer number (7620728).

Almost surely, 240008801 is an apocalyptic number.

It is an amenable number.

40008801 is a deficient number, since it is larger than the sum of its proper divisors (20957023).

40008801 is a wasteful number, since it uses less digits than its factorization.

40008801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905191.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 40008801 is about 6325.2510622109. The cubic root of 40008801 is about 342.0202699931.

Adding to 40008801 its reverse (10880004), we get a palindrome (50888805).

The spelling of 40008801 in words is "forty million, eight thousand, eight hundred one".

Divisors: 1 3 7 21 1905181 5715543 13336267 40008801