402747274820 has 48 divisors (see below), whose sum is σ = 922912498368. Its totient is φ = 146413061760.

The previous prime is 402747274781. The next prime is 402747274841. The reversal of 402747274820 is 28472747204.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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, 550202 + ... + 1052718.

It is an arithmetic number, because the mean of its divisors is an integer number (19227343716).

Almost surely, 2^402747274820 is an apocalyptic number.

It is an amenable number.

402747274820 is an abundant number, since it is smaller than the sum of its proper divisors (520165223548).

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

402747274820 is a wasteful number, since it uses less digits than its factorization.

402747274820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506180 (or 506178 counting only the distinct ones).

The product of its (nonzero) digits is 1404928, while the sum is 47.

The spelling of 402747274820 in words is "four hundred two billion, seven hundred forty-seven million, two hundred seventy-four thousand, eight hundred twenty".