87620136 has 96 divisors (see below), whose sum is σ = 235936800. Its totient is φ = 27081600.

The previous prime is 87620123. The next prime is 87620147. The reversal of 87620136 is 63102678.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 87620097 and 87620106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 668791 + ... + 668921.

It is an arithmetic number, because the mean of its divisors is an integer number (2457675).

Almost surely, 2^87620136 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 87620136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117968400).

87620136 is an abundant number, since it is smaller than the sum of its proper divisors (148316664).

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

87620136 is a wasteful number, since it uses less digits than its factorization.

87620136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 87620136 is about 9360.5628035925. The cubic root of 87620136 is about 444.1550874504.

It can be divided in two parts, 876 and 20136, that added together give a palindrome (21012).

The spelling of 87620136 in words is "eighty-seven million, six hundred twenty thousand, one hundred thirty-six".