723972 has 12 divisors (see below), whose sum is σ = 1689296. Its totient is φ = 241320.

The previous prime is 723967. The next prime is 723973. The reversal of 723972 is 279327.

It is a tau number, because it is divible by the number of its divisors (12).

It is a d-powerful number, because it can be written as 7 + 2 + 9⁵ + 3¹² + 7⁴ + 2¹⁷ .

It is not an unprimeable number, because it can be changed into a prime (723973) by changing a digit.

723972 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 in 3 ways as a sum of consecutive naturals, for example, 30154 + ... + 30177.

2⁷²³⁹⁷² is an apocalyptic number.

It is an amenable number.

723972 is an abundant number, since it is smaller than the sum of its proper divisors (965324).

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

723972 is a wasteful number, since it uses less digits than its factorization.

723972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60338 (or 60336 counting only the distinct ones).

The product of its digits is 5292, while the sum is 30.

The square root of 723972 is about 850.8654417709. The cubic root of 723972 is about 89.7926088860.

The spelling of 723972 in words is "seven hundred twenty-three thousand, nine hundred seventy-two".