402838836 has 48 divisors (see below), whose sum is σ = 1032460800. Its totient is φ = 121679712.

The previous prime is 402838829. The next prime is 402838853. The reversal of 402838836 is 638838204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33166 + ... + 43653.

It is an arithmetic number, because the mean of its divisors is an integer number (21509600).

Almost surely, 2^402838836 is an apocalyptic number.

402838836 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

402838836 is an abundant number, since it is smaller than the sum of its proper divisors (629621964).

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

402838836 is a wasteful number, since it uses less digits than its factorization.

402838836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76868 (or 76866 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 402838836 is about 20070.8454231505. The cubic root of 402838836 is about 738.5452525655.

The spelling of 402838836 in words is "four hundred two million, eight hundred thirty-eight thousand, eight hundred thirty-six".