87313512 has 192 divisors, whose sum is σ = 274060800. Its totient is φ = 22913280.

The previous prime is 87313511. The next prime is 87313517. The reversal of 87313512 is 21531378.

Its product of digits (5040) is a multiple of the sum of its prime factors (168).

It is a self number, because there is not a number n which added to its sum of digits gives 87313512.

It is not an unprimeable number, because it can be changed into a prime (87313511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 847653 + ... + 847755.

It is an arithmetic number, because the mean of its divisors is an integer number (1427400).

Almost surely, 2^87313512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87313512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137030400).

87313512 is an abundant number, since it is smaller than the sum of its proper divisors (186747288).

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

87313512 is a wasteful number, since it uses less digits than its factorization.

87313512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 151 counting only the distinct ones).

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

The square root of 87313512 is about 9344.1699470847. The cubic root of 87313512 is about 443.6363795066.

The spelling of 87313512 in words is "eighty-seven million, three hundred thirteen thousand, five hundred twelve".