87022918 has 4 divisors (see below), whose sum is σ = 130534380. Its totient is φ = 43511458.

The previous prime is 87022909. The next prime is 87022933. The reversal of 87022918 is 81922078.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21755728 + ... + 21755731.

It is an arithmetic number, because the mean of its divisors is an integer number (32633595).

Almost surely, 2^87022918 is an apocalyptic number.

87022918 is a deficient number, since it is larger than the sum of its proper divisors (43511462).

87022918 is a wasteful number, since it uses less digits than its factorization.

87022918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43511461.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 87022918 is about 9328.6075059464. The cubic root of 87022918 is about 443.1436670865.

The spelling of 87022918 in words is "eighty-seven million, twenty-two thousand, nine hundred eighteen".