87870530 has 16 divisors (see below), whose sum is σ = 172545984. Its totient is φ = 31952880.

The previous prime is 87870521. The next prime is 87870533. The reversal of 87870530 is 3507878.

It is not an unprimeable number, because it can be changed into a prime (87870533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399302 + ... + 399521.

It is an arithmetic number, because the mean of its divisors is an integer number (10784124).

Almost surely, 2^87870530 is an apocalyptic number.

87870530 is a deficient number, since it is larger than the sum of its proper divisors (84675454).

87870530 is a wasteful number, since it uses less digits than its factorization.

87870530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798841.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 87870530 is about 9373.9282054003. The cubic root of 87870530 is about 444.5777756686.

The spelling of 87870530 in words is "eighty-seven million, eight hundred seventy thousand, five hundred thirty".