402661602 has 48 divisors (see below), whose sum is σ = 1024026432. Its totient is φ = 111935520.

The previous prime is 402661591. The next prime is 402661603. The reversal of 402661602 is 206166204.

It is a happy number.

402661602 is a `hidden beast` number, since 40 + 2 + 6 + 616 + 0 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (402661603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38524 + ... + 47847.

It is an arithmetic number, because the mean of its divisors is an integer number (21333884).

Almost surely, 2^402661602 is an apocalyptic number.

402661602 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

402661602 is an abundant number, since it is smaller than the sum of its proper divisors (621364830).

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

402661602 is a wasteful number, since it uses less digits than its factorization.

402661602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86423 (or 86420 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 402661602 is about 20066.4297272833. The cubic root of 402661602 is about 738.4369259275.

The spelling of 402661602 in words is "four hundred two million, six hundred sixty-one thousand, six hundred two".