78422244 has 12 divisors (see below), whose sum is σ = 182985264. Its totient is φ = 26140744.

The previous prime is 78422237. The next prime is 78422287. The reversal of 78422244 is 44222487.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3267582 + ... + 3267605.

It is an arithmetic number, because the mean of its divisors is an integer number (15248772).

Almost surely, 2^78422244 is an apocalyptic number.

It is an amenable number.

78422244 is an abundant number, since it is smaller than the sum of its proper divisors (104563020).

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

78422244 is a wasteful number, since it uses less digits than its factorization.

78422244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6535194 (or 6535192 counting only the distinct ones).

The product of its digits is 28672, while the sum is 33.

The square root of 78422244 is about 8855.6334612494. The cubic root of 78422244 is about 428.0354659521.

The spelling of 78422244 in words is "seventy-eight million, four hundred twenty-two thousand, two hundred forty-four".