78455888 has 20 divisors (see below), whose sum is σ = 173724000. Its totient is φ = 33623904.

The previous prime is 78455849. The next prime is 78455893. The reversal of 78455888 is 88855487.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350138 + ... + 350361.

It is an arithmetic number, because the mean of its divisors is an integer number (8686200).

Almost surely, 2^78455888 is an apocalyptic number.

It is an amenable number.

78455888 is an abundant number, since it is smaller than the sum of its proper divisors (95268112).

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

78455888 is a wasteful number, since it uses less digits than its factorization.

78455888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700514 (or 700508 counting only the distinct ones).

The product of its digits is 2867200, while the sum is 53.

The square root of 78455888 is about 8857.5328393408. The cubic root of 78455888 is about 428.0966678322.

The spelling of 78455888 in words is "seventy-eight million, four hundred fifty-five thousand, eight hundred eighty-eight".