724992 has 52 divisors (see below), whose sum is σ = 1965840. Its totient is φ = 237568.

The previous prime is 724991. The next prime is 724993. The reversal of 724992 is 299427.

It is an interprime number because it is at equal distance from previous prime (724991) and next prime (724993).

It is a super-2 number, since 2×724992² = 1051226800128, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (724991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12259 + ... + 12317.

2⁷²⁴⁹⁹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 724992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (982920).

724992 is an abundant number, since it is smaller than the sum of its proper divisors (1240848).

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

724992 is an equidigital number, since it uses as much as digits as its factorization.

724992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 64 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 724992 is about 851.4646205216. The cubic root of 724992 is about 89.8347585280.

The spelling of 724992 in words is "seven hundred twenty-four thousand, nine hundred ninety-two".