87189704 has 32 divisors (see below), whose sum is σ = 189475200. Its totient is φ = 36839040.

The previous prime is 87189671. The next prime is 87189709. The reversal of 87189704 is 40798178.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (87189709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6989 + ... + 14940.

It is an arithmetic number, because the mean of its divisors is an integer number (5921100).

Almost surely, 2^87189704 is an apocalyptic number.

It is an amenable number.

87189704 is an abundant number, since it is smaller than the sum of its proper divisors (102285496).

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

87189704 is a wasteful number, since it uses less digits than its factorization.

87189704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22013 (or 22009 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 87189704 is about 9337.5427174391. The cubic root of 87189704 is about 443.4265925251.

The spelling of 87189704 in words is "eighty-seven million, one hundred eighty-nine thousand, seven hundred four".