723124872 has 96 divisors (see below), whose sum is σ = 2014346880. Its totient is φ = 234213120.

The previous prime is 723124861. The next prime is 723124877. The reversal of 723124872 is 278421327.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (723124877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1437373 + ... + 1437875.

It is an arithmetic number, because the mean of its divisors is an integer number (20982780).

Almost surely, 2^723124872 is an apocalyptic number.

723124872 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 723124872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1007173440).

723124872 is an abundant number, since it is smaller than the sum of its proper divisors (1291222008).

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

723124872 is a wasteful number, since it uses less digits than its factorization.

723124872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043 (or 1036 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 723124872 is about 26890.9812390697. The cubic root of 723124872 is about 897.5757276077.

The spelling of 723124872 in words is "seven hundred twenty-three million, one hundred twenty-four thousand, eight hundred seventy-two".