724071712 has 144 divisors (see below), whose sum is σ = 1823980032. Its totient is φ = 276756480.

The previous prime is 724071709. The next prime is 724071749. The reversal of 724071712 is 217170427.

It is a super-2 number, since 2×724071712² = 1048559688237221888, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1173228 + ... + 1173844.

It is an arithmetic number, because the mean of its divisors is an integer number (12666528).

Almost surely, 2^724071712 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 724071712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911990016).

724071712 is an abundant number, since it is smaller than the sum of its proper divisors (1099908320).

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

724071712 is a wasteful number, since it uses less digits than its factorization.

724071712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 724071712 is about 26908.5806388966. The cubic root of 724071712 is about 897.9673104801.

The spelling of 724071712 in words is "seven hundred twenty-four million, seventy-one thousand, seven hundred twelve".