724878032 has 40 divisors (see below), whose sum is σ = 1465921800. Its totient is φ = 346910720.

The previous prime is 724878019. The next prime is 724878041. The reversal of 724878032 is 230878427.

It can be written as a sum of positive squares in 4 ways, for example, as 153859216 + 571018816 = 12404^2 + 23896^2 .

It is a super-2 number, since 2×724878032² = 1050896322552386048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24344 + ... + 45192.

It is an arithmetic number, because the mean of its divisors is an integer number (36648045).

Almost surely, 2^724878032 is an apocalyptic number.

It is an amenable number.

724878032 is an abundant number, since it is smaller than the sum of its proper divisors (741043768).

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

724878032 is a wasteful number, since it uses less digits than its factorization.

724878032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20951 (or 20945 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 724878032 is about 26923.5590515073. The cubic root of 724878032 is about 898.3005097066.

The spelling of 724878032 in words is "seven hundred twenty-four million, eight hundred seventy-eight thousand, thirty-two".