400076736 has 28 divisors (see below), whose sum is σ = 1058536872. Its totient is φ = 133358848.

The previous prime is 400076707. The next prime is 400076753. The reversal of 400076736 is 637670004.

It is a super-2 number, since 2×400076736² = 320122789376827392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400076697 and 400076706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041675 + ... + 1042058.

Almost surely, 2^400076736 is an apocalyptic number.

It is an amenable number.

400076736 is an abundant number, since it is smaller than the sum of its proper divisors (658460136).

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

400076736 is a wasteful number, since it uses less digits than its factorization.

400076736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083748 (or 2083738 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 400076736 is about 20001.9183080024. The cubic root of 400076736 is about 736.8534130223.

The spelling of 400076736 in words is "four hundred million, seventy-six thousand, seven hundred thirty-six".