732724256640 has 128 divisors (see below), whose sum is σ = 2458482825600. Its totient is φ = 185109276672.

The previous prime is 732724256639. The next prime is 732724256657. The reversal of 732724256640 is 46652427237.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 732724256640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10006342 + ... + 10079301.

It is an arithmetic number, because the mean of its divisors is an integer number (19206897075).

Almost surely, 2^732724256640 is an apocalyptic number.

It is an amenable number.

732724256640 is an abundant number, since it is smaller than the sum of its proper divisors (1725758568960).

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

732724256640 is a wasteful number, since it uses less digits than its factorization.

732724256640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20085684 (or 20085672 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 48.

The spelling of 732724256640 in words is "seven hundred thirty-two billion, seven hundred twenty-four million, two hundred fifty-six thousand, six hundred forty".