402288552 has 32 divisors (see below), whose sum is σ = 1117468800. Its totient is φ = 134096112.

The previous prime is 402288541. The next prime is 402288563. The reversal of 402288552 is 255882204.

402288552 is a `hidden beast` number, since 4 + 0 + 22 + 88 + 552 = 666.

It is an interprime number because it is at equal distance from previous prime (402288541) and next prime (402288563).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931008 + ... + 931439.

It is an arithmetic number, because the mean of its divisors is an integer number (34920900).

Almost surely, 2^402288552 is an apocalyptic number.

It is an amenable number.

402288552 is an abundant number, since it is smaller than the sum of its proper divisors (715180248).

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

402288552 is a wasteful number, since it uses less digits than its factorization.

402288552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862462 (or 1862452 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 402288552 is about 20057.1321977994. The cubic root of 402288552 is about 738.2088112943.

The spelling of 402288552 in words is "four hundred two million, two hundred eighty-eight thousand, five hundred fifty-two".