87878768 has 20 divisors (see below), whose sum is σ = 177668688. Its totient is φ = 42028800.

The previous prime is 87878761. The next prime is 87878773. The reversal of 87878768 is 86787878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87878761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119033 + ... + 119768.

Almost surely, 2^87878768 is an apocalyptic number.

It is an amenable number.

87878768 is an abundant number, since it is smaller than the sum of its proper divisors (89789920).

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

87878768 is a wasteful number, since it uses less digits than its factorization.

87878768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238832 (or 238826 counting only the distinct ones).

The product of its digits is 8429568, while the sum is 59.

The square root of 87878768 is about 9374.3676053374. The cubic root of 87878768 is about 444.5916685223.

The spelling of 87878768 in words is "eighty-seven million, eight hundred seventy-eight thousand, seven hundred sixty-eight".