400680528 has 20 divisors (see below), whose sum is σ = 1035091488. Its totient is φ = 133560160.

The previous prime is 400680509. The next prime is 400680551. The reversal of 400680528 is 825086004.

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, 4173708 + ... + 4173803.

Almost surely, 2^400680528 is an apocalyptic number.

400680528 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

400680528 is an abundant number, since it is smaller than the sum of its proper divisors (634410960).

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

400680528 is a wasteful number, since it uses less digits than its factorization.

400680528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8347522 (or 8347516 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 400680528 is about 20017.0059699247. The cubic root of 400680528 is about 737.2239107522.

The spelling of 400680528 in words is "four hundred million, six hundred eighty thousand, five hundred twenty-eight".