88689720 has 128 divisors (see below), whose sum is σ = 320140800. Its totient is φ = 19201536.

The previous prime is 88689707. The next prime is 88689761. The reversal of 88689720 is 2798688.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 88689720.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13182 + ... + 18738.

It is an arithmetic number, because the mean of its divisors is an integer number (2501100).

Almost surely, 2^88689720 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 88689720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160070400).

88689720 is an abundant number, since it is smaller than the sum of its proper divisors (231451080).

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

88689720 is a wasteful number, since it uses less digits than its factorization.

88689720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5597 (or 5593 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 88689720 is about 9417.5219670569. The cubic root of 88689720 is about 445.9550585803.

The spelling of 88689720 in words is "eighty-eight million, six hundred eighty-nine thousand, seven hundred twenty".