87870212 has 48 divisors (see below), whose sum is σ = 178899840. Its totient is φ = 37458432.

The previous prime is 87870187. The next prime is 87870247. The reversal of 87870212 is 21207878.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28238 + ... + 31194.

It is an arithmetic number, because the mean of its divisors is an integer number (3727080).

Almost surely, 2^87870212 is an apocalyptic number.

It is an amenable number.

87870212 is an abundant number, since it is smaller than the sum of its proper divisors (91029628).

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

87870212 is a wasteful number, since it uses less digits than its factorization.

87870212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020 (or 3018 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 87870212 is about 9373.9112434458. The cubic root of 87870212 is about 444.5772393647.

The spelling of 87870212 in words is "eighty-seven million, eight hundred seventy thousand, two hundred twelve".