78326886 has 32 divisors (see below), whose sum is σ = 173455488. Its totient is φ = 23379840.

The previous prime is 78326881. The next prime is 78326971. The reversal of 78326886 is 68862387.

It is a happy number.

It is a super-2 number, since 2×78326886² = 12270202140913992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78326881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4435 + ... + 13278.

It is an arithmetic number, because the mean of its divisors is an integer number (5420484).

Almost surely, 2^78326886 is an apocalyptic number.

78326886 is an abundant number, since it is smaller than the sum of its proper divisors (95128602).

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

78326886 is a wasteful number, since it uses less digits than its factorization.

78326886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17796.

The product of its digits is 774144, while the sum is 48.

The square root of 78326886 is about 8850.2477931412. The cubic root of 78326886 is about 427.8619048177.

The spelling of 78326886 in words is "seventy-eight million, three hundred twenty-six thousand, eight hundred eighty-six".