88656138 has 24 divisors (see below), whose sum is σ = 194796576. Its totient is φ = 29135400.

The previous prime is 88656137. The next prime is 88656149. The reversal of 88656138 is 83165688.

88656138 is a `hidden beast` number, since 8 + 86 + 561 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 88656093 and 88656102.

It is not an unprimeable number, because it can be changed into a prime (88656133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33408 + ... + 35963.

It is an arithmetic number, because the mean of its divisors is an integer number (8116524).

Almost surely, 2^88656138 is an apocalyptic number.

88656138 is an abundant number, since it is smaller than the sum of its proper divisors (106140438).

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

88656138 is a wasteful number, since it uses less digits than its factorization.

88656138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69450 (or 69447 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 88656138 is about 9415.7388451465. The cubic root of 88656138 is about 445.8987651212.

The spelling of 88656138 in words is "eighty-eight million, six hundred fifty-six thousand, one hundred thirty-eight".