87215154 has 24 divisors (see below), whose sum is σ = 188882352. Its totient is φ = 26835120.

The previous prime is 87215153. The next prime is 87215171. The reversal of 87215154 is 45151278.

It is not an unprimeable number, because it can be changed into a prime (87215153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41992 + ... + 44019.

It is an arithmetic number, because the mean of its divisors is an integer number (7870098).

Almost surely, 2^87215154 is an apocalyptic number.

87215154 is an abundant number, since it is smaller than the sum of its proper divisors (101667198).

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

87215154 is a wasteful number, since it uses less digits than its factorization.

87215154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86042 (or 86029 counting only the distinct ones).

The product of its digits is 11200, while the sum is 33.

The square root of 87215154 is about 9338.9053962443. The cubic root of 87215154 is about 443.4697325918.

The spelling of 87215154 in words is "eighty-seven million, two hundred fifteen thousand, one hundred fifty-four".