87639030 has 32 divisors (see below), whose sum is σ = 233704800. Its totient is φ = 23370336.

The previous prime is 87639023. The next prime is 87639049. The reversal of 87639030 is 3093678.

It is a congruent 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, 162025 + ... + 162564.

It is an arithmetic number, because the mean of its divisors is an integer number (7303275).

Almost surely, 2^87639030 is an apocalyptic number.

87639030 is an abundant number, since it is smaller than the sum of its proper divisors (146065770).

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

87639030 is a wasteful number, since it uses less digits than its factorization.

87639030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324605 (or 324599 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 87639030 is about 9361.5719833797. The cubic root of 87639030 is about 444.1870103374.

The spelling of 87639030 in words is "eighty-seven million, six hundred thirty-nine thousand, thirty".