87315740 has 48 divisors (see below), whose sum is σ = 197098272. Its totient is φ = 32372736.

The previous prime is 87315733. The next prime is 87315763. The reversal of 87315740 is 4751378.

It is a self number, because there is not a number n which added to its sum of digits gives 87315740.

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, 20864 + ... + 24696.

It is an arithmetic number, because the mean of its divisors is an integer number (4106214).

Almost surely, 2^87315740 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 87315740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98549136).

87315740 is an abundant number, since it is smaller than the sum of its proper divisors (109782532).

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

87315740 is a wasteful number, since it uses less digits than its factorization.

87315740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926 (or 3924 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 87315740 is about 9344.2891650462. The cubic root of 87315740 is about 443.6401529334.

The spelling of 87315740 in words is "eighty-seven million, three hundred fifteen thousand, seven hundred forty".