402940724580 has 48 divisors (see below), whose sum is σ = 1253593367040. Its totient is φ = 107450859744.

The previous prime is 402940724573. The next prime is 402940724581. The reversal of 402940724580 is 85427049204.

402940724580 is a `hidden beast` number, since 4 + 0 + 2 + 9 + 40 + 7 + 24 + 580 = 666.

It is a super-2 number, since 2×402940724580² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (402940724581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373092724 + ... + 373093803.

It is an arithmetic number, because the mean of its divisors is an integer number (26116528480).

Almost surely, 2^402940724580 is an apocalyptic number.

It is an amenable number.

402940724580 is an abundant number, since it is smaller than the sum of its proper divisors (850652642460).

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

402940724580 is a wasteful number, since it uses less digits than its factorization.

402940724580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746186545 (or 746186537 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 402940724580 in words is "four hundred two billion, nine hundred forty million, seven hundred twenty-four thousand, five hundred eighty".