87522636 has 48 divisors (see below), whose sum is σ = 216324864. Its totient is φ = 27483456.

The previous prime is 87522629. The next prime is 87522637. The reversal of 87522636 is 63622578.

It is a junction number, because it is equal to n+sod(n) for n = 87522594 and 87522603.

It is not an unprimeable number, because it can be changed into a prime (87522637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16126 + ... + 20858.

It is an arithmetic number, because the mean of its divisors is an integer number (4506768).

Almost surely, 2^87522636 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 87522636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108162432).

87522636 is an abundant number, since it is smaller than the sum of its proper divisors (128802228).

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

87522636 is a wasteful number, since it uses less digits than its factorization.

87522636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830 (or 4828 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 87522636 is about 9355.3533337870. The cubic root of 87522636 is about 443.9902806086.

The spelling of 87522636 in words is "eighty-seven million, five hundred twenty-two thousand, six hundred thirty-six".