87015726 has 48 divisors (see below), whose sum is σ = 216294624. Its totient is φ = 24766272.

The previous prime is 87015679. The next prime is 87015727. The reversal of 87015726 is 62751078.

87015726 is a `hidden beast` number, since 87 + 0 + 1 + 572 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87015727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35740 + ... + 38096.

It is an arithmetic number, because the mean of its divisors is an integer number (4506138).

Almost surely, 2^87015726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87015726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108147312).

87015726 is an abundant number, since it is smaller than the sum of its proper divisors (129278898).

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

87015726 is a wasteful number, since it uses less digits than its factorization.

87015726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665 (or 2662 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 87015726 is about 9328.2220170834. Note that the first 3 decimals coincide. The cubic root of 87015726 is about 443.1314588961.

The spelling of 87015726 in words is "eighty-seven million, fifteen thousand, seven hundred twenty-six".