724873128 has 32 divisors (see below), whose sum is σ = 2071066560. Its totient is φ = 207106560.

The previous prime is 724873099. The next prime is 724873133. The reversal of 724873128 is 821378427.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 724873128.

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, 2157193 + ... + 2157528.

It is an arithmetic number, because the mean of its divisors is an integer number (64720830).

Almost surely, 2^724873128 is an apocalyptic number.

It is an amenable number.

724873128 is an abundant number, since it is smaller than the sum of its proper divisors (1346193432).

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

724873128 is a wasteful number, since it uses less digits than its factorization.

724873128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4314737 (or 4314733 counting only the distinct ones).

The product of its digits is 150528, while the sum is 42.

The square root of 724873128 is about 26923.4679786984. The cubic root of 724873128 is about 898.2984839517.

The spelling of 724873128 in words is "seven hundred twenty-four million, eight hundred seventy-three thousand, one hundred twenty-eight".