402543856 has 40 divisors (see below), whose sum is σ = 916285104. Its totient is φ = 168898560.

The previous prime is 402543853. The next prime is 402543871. The reversal of 402543856 is 658345204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402543853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85681 + ... + 90256.

Almost surely, 2^402543856 is an apocalyptic number.

It is an amenable number.

402543856 is an abundant number, since it is smaller than the sum of its proper divisors (513741248).

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

402543856 is a wasteful number, since it uses less digits than its factorization.

402543856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175969 (or 175963 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 402543856 is about 20063.4956076951. The cubic root of 402543856 is about 738.3649411887.

The spelling of 402543856 in words is "four hundred two million, five hundred forty-three thousand, eight hundred fifty-six".