87130650 has 24 divisors (see below), whose sum is σ = 216084384. Its totient is φ = 23234800.

The previous prime is 87130649. The next prime is 87130651. The reversal of 87130650 is 5603178.

It is an interprime number because it is at equal distance from previous prime (87130649) and next prime (87130651).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (87130651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 290286 + ... + 290585.

It is an arithmetic number, because the mean of its divisors is an integer number (9003516).

Almost surely, 2^87130650 is an apocalyptic number.

87130650 is an abundant number, since it is smaller than the sum of its proper divisors (128953734).

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

87130650 is a wasteful number, since it uses less digits than its factorization.

87130650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580886 (or 580881 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 87130650 is about 9334.3800008356. The cubic root of 87130650 is about 443.3264582699.

The spelling of 87130650 in words is "eighty-seven million, one hundred thirty thousand, six hundred fifty".