87860136 has 128 divisors (see below), whose sum is σ = 276192000. Its totient is φ = 23143680.

The previous prime is 87860119. The next prime is 87860141. The reversal of 87860136 is 63106878.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 87860094 and 87860103.

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 31 ways as a sum of consecutive naturals, for example, 106606 + ... + 107426.

It is an arithmetic number, because the mean of its divisors is an integer number (2157750).

Almost surely, 2^87860136 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 87860136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138096000).

87860136 is an abundant number, since it is smaller than the sum of its proper divisors (188331864).

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

87860136 is a wasteful number, since it uses less digits than its factorization.

87860136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 87860136 is about 9373.3737789549. The cubic root of 87860136 is about 444.5602456214.

The spelling of 87860136 in words is "eighty-seven million, eight hundred sixty thousand, one hundred thirty-six".