723872 has 12 divisors (see below), whose sum is σ = 1425186. Its totient is φ = 361920.

The previous prime is 723859. The next prime is 723893. The reversal of 723872 is 278327.

It can be written as a sum of positive squares in only one way, i.e., 414736 + 309136 = 644^2 + 556^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11279 + ... + 11342.

2⁷²³⁸⁷² is an apocalyptic number.

It is an amenable number.

723872 is a deficient number, since it is larger than the sum of its proper divisors (701314).

723872 is a wasteful number, since it uses less digits than its factorization.

723872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22631 (or 22623 counting only the distinct ones).

The product of its digits is 4704, while the sum is 29.

The square root of 723872 is about 850.8066760434. The cubic root of 723872 is about 89.7884744377.

It can be divided in two parts, 72 and 3872, that multiplied together give a square (278784 = 528²).

The spelling of 723872 in words is "seven hundred twenty-three thousand, eight hundred seventy-two".