87151812 has 24 divisors (see below), whose sum is σ = 221841312. Its totient is φ = 26409600.

The previous prime is 87151793. The next prime is 87151829. The reversal of 87151812 is 21815178.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329989 + ... + 330252.

It is an arithmetic number, because the mean of its divisors is an integer number (9243388).

Almost surely, 2^87151812 is an apocalyptic number.

It is an amenable number.

87151812 is an abundant number, since it is smaller than the sum of its proper divisors (134689500).

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

87151812 is a wasteful number, since it uses less digits than its factorization.

87151812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660259 (or 660257 counting only the distinct ones).

The product of its digits is 4480, while the sum is 33.

The square root of 87151812 is about 9335.5134834673. The cubic root of 87151812 is about 443.3623465789.

The spelling of 87151812 in words is "eighty-seven million, one hundred fifty-one thousand, eight hundred twelve".