724792540 has 24 divisors (see below), whose sum is σ = 1531409040. Its totient is φ = 288137088.

The previous prime is 724792529. The next prime is 724792553. The reversal of 724792540 is 45297427.

It is a junction number, because it is equal to n+sod(n) for n = 724792493 and 724792502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107905 + ... + 114424.

It is an arithmetic number, because the mean of its divisors is an integer number (63808710).

Almost surely, 2^724792540 is an apocalyptic number.

It is an amenable number.

724792540 is an abundant number, since it is smaller than the sum of its proper divisors (806616500).

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

724792540 is a wasteful number, since it uses less digits than its factorization.

724792540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222501 (or 222499 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 724792540 is about 26921.9713245520. The cubic root of 724792540 is about 898.2651931783.

The spelling of 724792540 in words is "seven hundred twenty-four million, seven hundred ninety-two thousand, five hundred forty".