731115680 has 48 divisors (see below), whose sum is σ = 1731277800. Its totient is φ = 291766272.

The previous prime is 731115673. The next prime is 731115703. The reversal of 731115680 is 86511137.

It can be written as a sum of positive squares in 4 ways, for example, as 655564816 + 75550864 = 25604^2 + 8692^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66752 + ... + 76928.

Almost surely, 2^731115680 is an apocalyptic number.

It is an amenable number.

731115680 is an abundant number, since it is smaller than the sum of its proper divisors (1000162120).

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

731115680 is a wasteful number, since it uses less digits than its factorization.

731115680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10641 (or 10633 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 731115680 is about 27039.1508742416. The cubic root of 731115680 is about 900.8698093036.

The spelling of 731115680 in words is "seven hundred thirty-one million, one hundred fifteen thousand, six hundred eighty".