400788112 has 20 divisors (see below), whose sum is σ = 777210796. Its totient is φ = 200217600.

The previous prime is 400788103. The next prime is 400788131. The reversal of 400788112 is 211887004.

It can be written as a sum of positive squares in 2 ways, for example, as 178062336 + 222725776 = 13344^2 + 14924^2 .

It is a super-2 number, since 2×400788112² = 321262221441049088, which contains 22 as substring.

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, 8788 + ... + 29644.

Almost surely, 2^400788112 is an apocalyptic number.

It is an amenable number.

400788112 is a deficient number, since it is larger than the sum of its proper divisors (376422684).

400788112 is a wasteful number, since it uses less digits than its factorization.

400788112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22066 (or 22060 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 400788112 is about 20019.6931045408. The cubic root of 400788112 is about 737.2898871715.

The spelling of 400788112 in words is "four hundred million, seven hundred eighty-eight thousand, one hundred twelve".