32640456 has 32 divisors (see below), whose sum is σ = 81748800. Its totient is φ = 10860480.

The previous prime is 32640451. The next prime is 32640481. The reversal of 32640456 is 65404623.

It is not an unprimeable number, because it can be changed into a prime (32640451) 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, 19326 + ... + 20946.

It is an arithmetic number, because the mean of its divisors is an integer number (2554650).

Almost surely, 2^32640456 is an apocalyptic number.

It is an amenable number.

32640456 is an abundant number, since it is smaller than the sum of its proper divisors (49108344).

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

32640456 is a wasteful number, since it uses less digits than its factorization.

32640456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469 (or 2465 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 32640456 is about 5713.1826506773. The cubic root of 32640456 is about 319.5842778644.

The spelling of 32640456 in words is "thirty-two million, six hundred forty thousand, four hundred fifty-six".