402887136 has 48 divisors (see below), whose sum is σ = 1103566464. Its totient is φ = 128456064.

The previous prime is 402887101. The next prime is 402887143. The reversal of 402887136 is 631788204.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 402887094 and 402887103.

It is a congruent number.

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, 89026 + ... + 93441.

It is an arithmetic number, because the mean of its divisors is an integer number (22990968).

Almost surely, 2^402887136 is an apocalyptic number.

402887136 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

402887136 is an abundant number, since it is smaller than the sum of its proper divisors (700679328).

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

402887136 is a wasteful number, since it uses less digits than its factorization.

402887136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182503 (or 182495 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 402887136 is about 20072.0486248913. The cubic root of 402887136 is about 738.5747683478.

The spelling of 402887136 in words is "four hundred two million, eight hundred eighty-seven thousand, one hundred thirty-six".