7389888 has 56 divisors (see below), whose sum is σ = 21336000. Its totient is φ = 2238720.

The previous prime is 7389871. The next prime is 7389901. The reversal of 7389888 is 8889837.

It is a super-2 number, since 2×7389888² = 109220889305088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7389888.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363 + ... + 3861.

It is an arithmetic number, because the mean of its divisors is an integer number (381000).

Almost surely, 2^7389888 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 7389888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10668000).

7389888 is an abundant number, since it is smaller than the sum of its proper divisors (13946112).

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

7389888 is a wasteful number, since it uses less digits than its factorization.

7389888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525 (or 3515 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The square root of 7389888 is about 2718.4348438026. The cubic root of 7389888 is about 194.7807133892.

Subtracting from 7389888 its sum of digits (51), we obtain a palindrome (7389837).

The spelling of 7389888 in words is "seven million, three hundred eighty-nine thousand, eight hundred eighty-eight".