402555252 has 24 divisors (see below), whose sum is σ = 1024686432. Its totient is φ = 121986400.

The previous prime is 402555233. The next prime is 402555281. The reversal of 402555252 is 252555204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1524699 + ... + 1524962.

It is an arithmetic number, because the mean of its divisors is an integer number (42695268).

Almost surely, 2^402555252 is an apocalyptic number.

It is an amenable number.

402555252 is an abundant number, since it is smaller than the sum of its proper divisors (622131180).

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

402555252 is a wasteful number, since it uses less digits than its factorization.

402555252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049679 (or 3049677 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 402555252 is about 20063.7796040527. The cubic root of 402555252 is about 738.3719088166.

The spelling of 402555252 in words is "four hundred two million, five hundred fifty-five thousand, two hundred fifty-two".