87521896 has 64 divisors (see below), whose sum is σ = 209018880. Its totient is φ = 33362880.

The previous prime is 87521879. The next prime is 87521989. The reversal of 87521896 is 69812578.

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, 27441 + ... + 30463.

It is an arithmetic number, because the mean of its divisors is an integer number (3265920).

Almost surely, 2^87521896 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 87521896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104509440).

87521896 is an abundant number, since it is smaller than the sum of its proper divisors (121496984).

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

87521896 is a wasteful number, since it uses less digits than its factorization.

87521896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3094 (or 3090 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 87521896 is about 9355.3137841550. The cubic root of 87521896 is about 443.9890292990.

It can be divided in two parts, 8752 and 1896, that added together give a cube (10648 = 22³).

The spelling of 87521896 in words is "eighty-seven million, five hundred twenty-one thousand, eight hundred ninety-six".