86778288 has 30 divisors (see below), whose sum is σ = 242859084. Its totient is φ = 28926048.

The previous prime is 86778253. The next prime is 86778313. The reversal of 86778288 is 88287768.

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, 301170 + ... + 301457.

Almost surely, 2^86778288 is an apocalyptic number.

It is an amenable number.

86778288 is an abundant number, since it is smaller than the sum of its proper divisors (156080796).

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

86778288 is a wasteful number, since it uses less digits than its factorization.

86778288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602641 (or 602632 counting only the distinct ones).

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

The square root of 86778288 is about 9315.4864607276. The cubic root of 86778288 is about 442.7280372083.

The spelling of 86778288 in words is "eighty-six million, seven hundred seventy-eight thousand, two hundred eighty-eight".