2640452172 has 24 divisors (see below), whose sum is σ = 6523470576. Its totient is φ = 828377088.

The previous prime is 2640452167. The next prime is 2640452179. The reversal of 2640452172 is 2712540462.

It is not an unprimeable number, because it can be changed into a prime (2640452179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6471493 + ... + 6471900.

It is an arithmetic number, because the mean of its divisors is an integer number (271811274).

Almost surely, 2^2640452172 is an apocalyptic number.

It is an amenable number.

2640452172 is an abundant number, since it is smaller than the sum of its proper divisors (3883018404).

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

2640452172 is a wasteful number, since it uses less digits than its factorization.

2640452172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12943417 (or 12943415 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 2640452172 is about 51385.3303190706. The cubic root of 2640452172 is about 1382.1635480606.

The spelling of 2640452172 in words is "two billion, six hundred forty million, four hundred fifty-two thousand, one hundred seventy-two".