87149118 has 32 divisors (see below), whose sum is σ = 206069760. Its totient is φ = 24040800.

The previous prime is 87149107. The next prime is 87149129. The reversal of 87149118 is 81194178.

It is an interprime number because it is at equal distance from previous prime (87149107) and next prime (87149129).

It is a Curzon number.

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, 34558 + ... + 36993.

It is an arithmetic number, because the mean of its divisors is an integer number (6439680).

Almost surely, 2^87149118 is an apocalyptic number.

87149118 is an abundant number, since it is smaller than the sum of its proper divisors (118920642).

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

87149118 is a wasteful number, since it uses less digits than its factorization.

87149118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71592.

The product of its digits is 16128, while the sum is 39.

The square root of 87149118 is about 9335.3691946275. The cubic root of 87149118 is about 443.3577781887.

The spelling of 87149118 in words is "eighty-seven million, one hundred forty-nine thousand, one hundred eighteen".