715849728 has 136 divisors (see below), whose sum is σ = 2088747456. Its totient is φ = 216268800.

The previous prime is 715849727. The next prime is 715849733. The reversal of 715849728 is 827948517.

It is not an unprimeable number, because it can be changed into a prime (715849727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2162523 + ... + 2162853.

Almost surely, 2^715849728 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 715849728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1044373728).

715849728 is an abundant number, since it is smaller than the sum of its proper divisors (1372897728).

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

715849728 is an equidigital number, since it uses as much as digits as its factorization.

715849728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 347 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 51.

The square root of 715849728 is about 26755.3682090156. The cubic root of 715849728 is about 894.5554955939. Note that the first 3 decimals are identical.

The spelling of 715849728 in words is "seven hundred fifteen million, eight hundred forty-nine thousand, seven hundred twenty-eight".