88639122 has 128 divisors (see below), whose sum is σ = 226437120. Its totient is φ = 22717440.

The previous prime is 88639099. The next prime is 88639129. The reversal of 88639122 is 22193688.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (88639129) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 860523 + ... + 860625.

It is an arithmetic number, because the mean of its divisors is an integer number (1769040).

Almost surely, 2^88639122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 88639122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113218560).

88639122 is an abundant number, since it is smaller than the sum of its proper divisors (137797998).

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

88639122 is a wasteful number, since it uses less digits than its factorization.

88639122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208.

The product of its digits is 41472, while the sum is 39.

The square root of 88639122 is about 9414.8352083295. The cubic root of 88639122 is about 445.8702357979.

The spelling of 88639122 in words is "eighty-eight million, six hundred thirty-nine thousand, one hundred twenty-two".