7715488 has 48 divisors (see below), whose sum is σ = 17309376. Its totient is φ = 3351040.

The previous prime is 7715483. The next prime is 7715549. The reversal of 7715488 is 8845177.

It is a self number, because there is not a number n which added to its sum of digits gives 7715488.

It is not an unprimeable number, because it can be changed into a prime (7715483) 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, 7620 + ... + 8572.

It is an arithmetic number, because the mean of its divisors is an integer number (360612).

Almost surely, 2^7715488 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 7715488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8654688).

7715488 is an abundant number, since it is smaller than the sum of its proper divisors (9593888).

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

7715488 is a wasteful number, since it uses less digits than its factorization.

7715488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 989 counting only the distinct ones).

The product of its digits is 62720, while the sum is 40.

The square root of 7715488 is about 2777.6767270509. The cubic root of 7715488 is about 197.6003911983.

The spelling of 7715488 in words is "seven million, seven hundred fifteen thousand, four hundred eighty-eight".