87968736 has 72 divisors (see below), whose sum is σ = 251282304. Its totient is φ = 29191680.

The previous prime is 87968729. The next prime is 87968737. The reversal of 87968736 is 63786978.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87968737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80385 + ... + 81471.

It is an arithmetic number, because the mean of its divisors is an integer number (3490032).

Almost surely, 2^87968736 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 87968736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125641152).

87968736 is an abundant number, since it is smaller than the sum of its proper divisors (163313568).

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

87968736 is a wasteful number, since it uses less digits than its factorization.

87968736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384 (or 1373 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 87968736 is about 9379.1649948170. The cubic root of 87968736 is about 444.7433372432.

The spelling of 87968736 in words is "eighty-seven million, nine hundred sixty-eight thousand, seven hundred thirty-six".