88615138 has 16 divisors (see below), whose sum is σ = 136769760. Its totient is φ = 43043616.

The previous prime is 88615133. The next prime is 88615181. The reversal of 88615138 is 83151688.

It is a self number, because there is not a number n which added to its sum of digits gives 88615138.

It is not an unprimeable number, because it can be changed into a prime (88615133) 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, 5253 + ... + 14311.

It is an arithmetic number, because the mean of its divisors is an integer number (8548110).

Almost surely, 2^88615138 is an apocalyptic number.

88615138 is a deficient number, since it is larger than the sum of its proper divisors (48154622).

88615138 is a wasteful number, since it uses less digits than its factorization.

88615138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9201.

The product of its digits is 46080, while the sum is 40.

The square root of 88615138 is about 9413.5613877002. The cubic root of 88615138 is about 445.8300176033.

The spelling of 88615138 in words is "eighty-eight million, six hundred fifteen thousand, one hundred thirty-eight".