721250712 has 384 divisors, whose sum is σ = 2566287360. Its totient is φ = 177914880.

The previous prime is 721250693. The next prime is 721250723. The reversal of 721250712 is 217052127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10764903 + ... + 10764969.

It is an arithmetic number, because the mean of its divisors is an integer number (6683040).

Almost surely, 2^721250712 is an apocalyptic number.

721250712 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 721250712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1283143680).

721250712 is an abundant number, since it is smaller than the sum of its proper divisors (1845036648).

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

721250712 is a wasteful number, since it uses less digits than its factorization.

721250712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 721250712 is about 26856.1112598232. Note that the first 3 decimals coincide. The cubic root of 721250712 is about 896.7996256421.

The spelling of 721250712 in words is "seven hundred twenty-one million, two hundred fifty thousand, seven hundred twelve".