402728088 has 32 divisors (see below), whose sum is σ = 1150652160. Its totient is φ = 115065120.

The previous prime is 402728071. The next prime is 402728093. The reversal of 402728088 is 880827204.

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, 1198428 + ... + 1198763.

It is an arithmetic number, because the mean of its divisors is an integer number (35957880).

Almost surely, 2^402728088 is an apocalyptic number.

It is an amenable number.

402728088 is an abundant number, since it is smaller than the sum of its proper divisors (747924072).

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

402728088 is a wasteful number, since it uses less digits than its factorization.

402728088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397207 (or 2397203 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 402728088 is about 20068.0863063721. The cubic root of 402728088 is about 738.4775663522.

The spelling of 402728088 in words is "four hundred two million, seven hundred twenty-eight thousand, eighty-eight".