87235970 has 32 divisors (see below), whose sum is σ = 159762240. Its totient is φ = 34292160.

The previous prime is 87235969. The next prime is 87236021. The reversal of 87235970 is 7953278.

It is a super-2 number, since 2×87235970² = 15220228923681800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 177425 + ... + 177915.

It is an arithmetic number, because the mean of its divisors is an integer number (4992570).

Almost surely, 2^87235970 is an apocalyptic number.

87235970 is a deficient number, since it is larger than the sum of its proper divisors (72526270).

87235970 is a wasteful number, since it uses less digits than its factorization.

87235970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 87235970 is about 9340.0198072595. The cubic root of 87235970 is about 443.5050113677.

The spelling of 87235970 in words is "eighty-seven million, two hundred thirty-five thousand, nine hundred seventy".