87130892 has 6 divisors (see below), whose sum is σ = 152479068. Its totient is φ = 43565444.

The previous prime is 87130891. The next prime is 87130907. The reversal of 87130892 is 29803178.

It is not an unprimeable number, because it can be changed into a prime (87130891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10891358 + ... + 10891365.

It is an arithmetic number, because the mean of its divisors is an integer number (25413178).

Almost surely, 2^87130892 is an apocalyptic number.

It is an amenable number.

87130892 is a deficient number, since it is larger than the sum of its proper divisors (65348176).

87130892 is a wasteful number, since it uses less digits than its factorization.

87130892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21782727 (or 21782725 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 87130892 is about 9334.3929636586. The cubic root of 87130892 is about 443.3268687068.

The spelling of 87130892 in words is "eighty-seven million, one hundred thirty thousand, eight hundred ninety-two".