715318128 has 140 divisors (see below), whose sum is σ = 2375062768. Its totient is φ = 204353280.

The previous prime is 715318127. The next prime is 715318169. The reversal of 715318128 is 821813517.

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

It is a junction number, because it is equal to n+sod(n) for n = 715318092 and 715318101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715318127) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 77268 + ... + 86028.

Almost surely, 2^715318128 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 715318128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1187531384).

715318128 is an abundant number, since it is smaller than the sum of its proper divisors (1659744640).

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

715318128 is an equidigital number, since it uses as much as digits as its factorization.

715318128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8794 (or 8773 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 715318128 is about 26745.4319090195. The cubic root of 715318128 is about 894.3340042915.

It can be divided in two parts, 7153 and 18128, that added together give a square (25281 = 159²).

The spelling of 715318128 in words is "seven hundred fifteen million, three hundred eighteen thousand, one hundred twenty-eight".