86778882 has 12 divisors (see below), whose sum is σ = 188020950. Its totient is φ = 28926288.

The previous prime is 86778841. The next prime is 86778917. The reversal of 86778882 is 28887768.

It can be written as a sum of positive squares in only one way, i.e., 63536841 + 23242041 = 7971^2 + 4821^2 .

It is a super-2 number, since 2×86778882² = 15061148722339848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2410507 + ... + 2410542.

Almost surely, 2^86778882 is an apocalyptic number.

86778882 is an abundant number, since it is smaller than the sum of its proper divisors (101242068).

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

86778882 is a wasteful number, since it uses less digits than its factorization.

86778882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4821057 (or 4821054 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 54.

The square root of 86778882 is about 9315.5183430660. The cubic root of 86778882 is about 442.7290473683.

The spelling of 86778882 in words is "eighty-six million, seven hundred seventy-eight thousand, eight hundred eighty-two".