402825906 has 32 divisors (see below), whose sum is σ = 1023050880. Its totient is φ = 115093008.

The previous prime is 402825889. The next prime is 402825923. The reversal of 402825906 is 609528204.

It is a happy number.

402825906 is a `hidden beast` number, since 40 + 28 + 2 + 590 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (402825889) and next prime (402825923).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532461 + ... + 533216.

It is an arithmetic number, because the mean of its divisors is an integer number (31970340).

Almost surely, 2^402825906 is an apocalyptic number.

402825906 is an abundant number, since it is smaller than the sum of its proper divisors (620224974).

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

402825906 is a wasteful number, since it uses less digits than its factorization.

402825906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065695 (or 1065689 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 402825906 is about 20070.5233115632. The cubic root of 402825906 is about 738.5373507353.

The spelling of 402825906 in words is "four hundred two million, eight hundred twenty-five thousand, nine hundred six".