89136860 has 24 divisors (see below), whose sum is σ = 190258656. Its totient is φ = 35069760.

The previous prime is 89136841. The next prime is 89136881. The reversal of 89136860 is 6863198.

89136860 = 160² + 161² + ... + 647².

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35312 + ... + 37751.

It is an arithmetic number, because the mean of its divisors is an integer number (7927444).

Almost surely, 2^89136860 is an apocalyptic number.

It is an amenable number.

89136860 is an abundant number, since it is smaller than the sum of its proper divisors (101121796).

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

89136860 is a wasteful number, since it uses less digits than its factorization.

89136860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73133 (or 73131 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 89136860 is about 9441.2319111438. The cubic root of 89136860 is about 446.7032481611.

The spelling of 89136860 in words is "eighty-nine million, one hundred thirty-six thousand, eight hundred sixty".