89878788 has 24 divisors (see below), whose sum is σ = 233019360. Its totient is φ = 29959560.

The previous prime is 89878783. The next prime is 89878807. The reversal of 89878788 is 88787898.

It is not an unprimeable number, because it can be changed into a prime (89878783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415998 + ... + 416213.

It is an arithmetic number, because the mean of its divisors is an integer number (9709140).

Almost surely, 2^89878788 is an apocalyptic number.

It is an amenable number.

89878788 is an abundant number, since it is smaller than the sum of its proper divisors (143140572).

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

89878788 is a wasteful number, since it uses less digits than its factorization.

89878788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832224 (or 832216 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 63.

The square root of 89878788 is about 9480.4423947409. The cubic root of 89878788 is about 447.9391990722.

The spelling of 89878788 in words is "eighty-nine million, eight hundred seventy-eight thousand, seven hundred eighty-eight".