400024236 has 24 divisors (see below), whose sum is σ = 942634224. Its totient is φ = 132020800.

The previous prime is 400024213. The next prime is 400024241. The reversal of 400024236 is 632420004.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163815 + ... + 166238.

It is an arithmetic number, because the mean of its divisors is an integer number (39276426).

Almost surely, 2^400024236 is an apocalyptic number.

It is an amenable number.

400024236 is an abundant number, since it is smaller than the sum of its proper divisors (542609988).

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

400024236 is a wasteful number, since it uses less digits than its factorization.

400024236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330161 (or 330159 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 400024236 is about 20000.6058908224. The cubic root of 400024236 is about 736.8211804588.

The spelling of 400024236 in words is "four hundred million, twenty-four thousand, two hundred thirty-six".