16400356 has 12 divisors (see below), whose sum is σ = 32800768. Its totient is φ = 7028712.

The previous prime is 16400347. The next prime is 16400383. The reversal of 16400356 is 65300461.

16400356 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 16400356.

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, 292836 + ... + 292891.

Almost surely, 2^16400356 is an apocalyptic number.

It is an amenable number.

16400356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16400356 is a wasteful number, since it uses less digits than its factorization.

16400356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585738 (or 585736 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 16400356 is about 4049.7352999918. The cubic root of 16400356 is about 254.0686569109.

The spelling of 16400356 in words is "sixteen million, four hundred thousand, three hundred fifty-six".