Base | Representation |
---|---|
bin | 10000110010001110101000 |
3 | 22021112201110 |
4 | 100302032220 |
5 | 2111300130 |
6 | 234150320 |
7 | 52254051 |
oct | 20621650 |
9 | 8245643 |
10 | 4400040 |
11 | 25358a7 |
12 | 15823a0 |
13 | bb0998 |
14 | 827728 |
15 | 5bdab0 |
hex | 4323a8 |
4400040 has 64 divisors (see below), whose sum is σ = 13570560. Its totient is φ = 1140480.
The previous prime is 4400027. The next prime is 4400041. The reversal of 4400040 is 400044.
4400040 is nontrivially palindromic in base 14.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a junction number, because it is equal to n+sod(n) for n = 4399989 and 4400025.
It is not an unprimeable number, because it can be changed into a prime (4400041) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3945 + ... + 4935.
It is an arithmetic number, because the mean of its divisors is an integer number (212040).
Almost surely, 24400040 is an apocalyptic number.
4400040 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 4400040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6785280).
4400040 is an abundant number, since it is smaller than the sum of its proper divisors (9170520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
4400040 is a wasteful number, since it uses less digits than its factorization.
4400040 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1042 (or 1038 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 12.
The square root of 4400040 is about 2097.6272309445. The cubic root of 4400040 is about 163.8647506770.
Adding to 4400040 its reverse (400044), we get a palindrome (4800084).
The spelling of 4400040 in words is "four million, four hundred thousand, forty".
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