402046680 has 64 divisors (see below), whose sum is σ = 1378448640. Its totient is φ = 91896192.

The previous prime is 402046679. The next prime is 402046703. The reversal of 402046680 is 86640204.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 238474 + ... + 240153.

It is an arithmetic number, because the mean of its divisors is an integer number (21538260).

Almost surely, 2^402046680 is an apocalyptic number.

402046680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402046680 is an abundant number, since it is smaller than the sum of its proper divisors (976401960).

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

402046680 is a wasteful number, since it uses less digits than its factorization.

402046680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478648 (or 478644 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 402046680 is about 20051.1017153672. The cubic root of 402046680 is about 738.0608347263.

Adding to 402046680 its reverse (86640204), we get a palindrome (488686884).

The spelling of 402046680 in words is "four hundred two million, forty-six thousand, six hundred eighty".