13888628 has 24 divisors (see below), whose sum is σ = 26477640. Its totient is φ = 6336000.

The previous prime is 13888607. The next prime is 13888669. The reversal of 13888628 is 82688831.

It can be written as a sum of positive squares in 4 ways, for example, as 35344 + 13853284 = 188^2 + 3722^2 .

It is a congruent number.

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, 3128 + ... + 6128.

It is an arithmetic number, because the mean of its divisors is an integer number (1103235).

Almost surely, 2^13888628 is an apocalyptic number.

It is an amenable number.

13888628 is a deficient number, since it is larger than the sum of its proper divisors (12589012).

13888628 is a wasteful number, since it uses less digits than its factorization.

13888628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107 (or 3105 counting only the distinct ones).

The product of its digits is 147456, while the sum is 44.

The square root of 13888628 is about 3726.7449604179. The cubic root of 13888628 is about 240.3734233076.

The spelling of 13888628 in words is "thirteen million, eight hundred eighty-eight thousand, six hundred twenty-eight".