88309992 has 64 divisors (see below), whose sum is σ = 228556800. Its totient is φ = 28416960.

The previous prime is 88309981. The next prime is 88309993. The reversal of 88309992 is 29990388.

It is not an unprimeable number, because it can be changed into a prime (88309993) 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, 88617 + ... + 89607.

It is an arithmetic number, because the mean of its divisors is an integer number (3571200).

Almost surely, 2^88309992 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 88309992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114278400).

88309992 is an abundant number, since it is smaller than the sum of its proper divisors (140246808).

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

88309992 is a wasteful number, since it uses less digits than its factorization.

88309992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1122 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 88309992 is about 9397.3396235318. The cubic root of 88309992 is about 445.3176909139.

The spelling of 88309992 in words is "eighty-eight million, three hundred nine thousand, nine hundred ninety-two".