400077632 has 28 divisors (see below), whose sum is σ = 798795456. Its totient is φ = 198806400.

The previous prime is 400077607. The next prime is 400077653. The reversal of 400077632 is 236770004.

It is a super-2 number, since 2×400077632² = 320124223253454848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400077595 and 400077604.

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, 8744 + ... + 29607.

Almost surely, 2^400077632 is an apocalyptic number.

It is an amenable number.

400077632 is a deficient number, since it is larger than the sum of its proper divisors (398717824).

400077632 is a wasteful number, since it uses less digits than its factorization.

400077632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38526 (or 38516 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 400077632 is about 20001.9407058415. The cubic root of 400077632 is about 736.8539631003.

Subtracting from 400077632 its reverse (236770004), we obtain a triangular number (163307628 = T₁₈₀₇₂).

The spelling of 400077632 in words is "four hundred million, seventy-seven thousand, six hundred thirty-two".