87022512 has 100 divisors (see below), whose sum is σ = 255218040. Its totient is φ = 28622592.

The previous prime is 87022511. The next prime is 87022553. The reversal of 87022512 is 21522078.

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

It is not an unprimeable number, because it can be changed into a prime (87022511) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 107164 + ... + 107972.

Almost surely, 2^87022512 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 87022512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127609020).

87022512 is an abundant number, since it is smaller than the sum of its proper divisors (168195528).

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

87022512 is a wasteful number, since it uses less digits than its factorization.

87022512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 87022512 is about 9328.5857449026. The cubic root of 87022512 is about 443.1429779324.

The spelling of 87022512 in words is "eighty-seven million, twenty-two thousand, five hundred twelve".