88221015 has 32 divisors (see below), whose sum is σ = 158477760. Its totient is φ = 46559232.

The previous prime is 88220981. The next prime is 88221017. The reversal of 88221015 is 51012288.

It is not a de Polignac number, because 88221015 - 2¹⁰ = 88219991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 88221015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88221017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9727 + ... + 16463.

It is an arithmetic number, because the mean of its divisors is an integer number (4952430).

Almost surely, 2^88221015 is an apocalyptic number.

88221015 is a deficient number, since it is larger than the sum of its proper divisors (70256745).

88221015 is a wasteful number, since it uses less digits than its factorization.

88221015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6848 (or 6842 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 88221015 is about 9392.6042714468. The cubic root of 88221015 is about 445.1680802596.

The spelling of 88221015 in words is "eighty-eight million, two hundred twenty-one thousand, fifteen".