724492 has 6 divisors (see below), whose sum is σ = 1267868. Its totient is φ = 362244.

The previous prime is 724487. The next prime is 724499. The reversal of 724492 is 294427.

It is a self number, because there is not a number n which added to its sum of digits gives 724492.

It is not an unprimeable number, because it can be changed into a prime (724499) by changing a digit.

724492 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90558 + ... + 90565.

2⁷²⁴⁴⁹² is an apocalyptic number.

It is an amenable number.

724492 is a deficient number, since it is larger than the sum of its proper divisors (543376).

724492 is a wasteful number, since it uses less digits than its factorization.

724492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181127 (or 181125 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 724492 is about 851.1709581512. The cubic root of 724492 is about 89.8141018821.

The spelling of 724492 in words is "seven hundred twenty-four thousand, four hundred ninety-two".