88865840 has 80 divisors (see below), whose sum is σ = 243793920. Its totient is φ = 29479680.

The previous prime is 88865827. The next prime is 88865857. The reversal of 88865840 is 4856888.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14801 + ... + 19919.

It is an arithmetic number, because the mean of its divisors is an integer number (3047424).

Almost surely, 2^88865840 is an apocalyptic number.

88865840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 88865840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121896960).

88865840 is an abundant number, since it is smaller than the sum of its proper divisors (154928080).

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

88865840 is a wasteful number, since it uses less digits than its factorization.

88865840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170 (or 5164 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 47.

The square root of 88865840 is about 9426.8679846490. The cubic root of 88865840 is about 446.2500558393.

The spelling of 88865840 in words is "eighty-eight million, eight hundred sixty-five thousand, eight hundred forty".