402536040 has 32 divisors (see below), whose sum is σ = 1207608480. Its totient is φ = 107342912.

The previous prime is 402536021. The next prime is 402536093. The reversal of 402536040 is 40635204.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 402536040.

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, 1677114 + ... + 1677353.

It is an arithmetic number, because the mean of its divisors is an integer number (37737765).

Almost surely, 2^402536040 is an apocalyptic number.

402536040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402536040 is an abundant number, since it is smaller than the sum of its proper divisors (805072440).

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

402536040 is a wasteful number, since it uses less digits than its factorization.

402536040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354481 (or 3354477 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 402536040 is about 20063.3008251384. The cubic root of 402536040 is about 738.3601623324.

The spelling of 402536040 in words is "four hundred two million, five hundred thirty-six thousand, forty".