87104902 has 4 divisors (see below), whose sum is σ = 130657356. Its totient is φ = 43552450.

The previous prime is 87104879. The next prime is 87104903. The reversal of 87104902 is 20940178.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87104903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21776224 + ... + 21776227.

It is an arithmetic number, because the mean of its divisors is an integer number (32664339).

Almost surely, 2^87104902 is an apocalyptic number.

87104902 is a deficient number, since it is larger than the sum of its proper divisors (43552454).

87104902 is a wasteful number, since it uses less digits than its factorization.

87104902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43552453.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 87104902 is about 9333.0006964534. Note that the first 3 decimals coincide. The cubic root of 87104902 is about 443.2827847971.

The spelling of 87104902 in words is "eighty-seven million, one hundred four thousand, nine hundred two".