88591720 has 64 divisors (see below), whose sum is σ = 230014080. Its totient is φ = 30080256.

The previous prime is 88591697. The next prime is 88591729. The reversal of 88591720 is 2719588.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (88591729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28482 + ... + 31438.

It is an arithmetic number, because the mean of its divisors is an integer number (3593970).

Almost surely, 2^88591720 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 88591720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115007040).

88591720 is an abundant number, since it is smaller than the sum of its proper divisors (141422360).

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

88591720 is a wasteful number, since it uses less digits than its factorization.

88591720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082 (or 3078 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 88591720 is about 9412.3174617094. The cubic root of 88591720 is about 445.7907415179.

The spelling of 88591720 in words is "eighty-eight million, five hundred ninety-one thousand, seven hundred twenty".