715124640 has 96 divisors (see below), whose sum is σ = 2257839360. Its totient is φ = 190260224.

The previous prime is 715124633. The next prime is 715124687. The reversal of 715124640 is 46421517.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×715124640² = 1022806501470259200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 715124598 and 715124607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242857 + ... + 245783.

It is an arithmetic number, because the mean of its divisors is an integer number (23519160).

Almost surely, 2^715124640 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 715124640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1128919680).

715124640 is an abundant number, since it is smaller than the sum of its proper divisors (1542714720).

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

715124640 is a wasteful number, since it uses less digits than its factorization.

715124640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454 (or 3446 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 715124640 is about 26741.8144485373. The cubic root of 715124640 is about 894.2533602183.

The spelling of 715124640 in words is "seven hundred fifteen million, one hundred twenty-four thousand, six hundred forty".