402838488 has 64 divisors (see below), whose sum is σ = 1205080800. Its totient is φ = 123949440.

The previous prime is 402838483. The next prime is 402838517. The reversal of 402838488 is 884838204.

It is a happy number.

It is a super-2 number, since 2×402838488² = 324557694828252288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402838483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68923 + ... + 74538.

Almost surely, 2^402838488 is an apocalyptic number.

It is an amenable number.

402838488 is an abundant number, since it is smaller than the sum of its proper divisors (802242312).

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

402838488 is a wasteful number, since it uses less digits than its factorization.

402838488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143489 (or 143479 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 45.

The square root of 402838488 is about 20070.8367538576. The cubic root of 402838488 is about 738.5450398967.

The spelling of 402838488 in words is "four hundred two million, eight hundred thirty-eight thousand, four hundred eighty-eight".