78544222 has 8 divisors (see below), whose sum is σ = 119813400. Its totient is φ = 38606424.

The previous prime is 78544211. The next prime is 78544231. The reversal of 78544222 is 22244587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332697 + ... + 332932.

It is an arithmetic number, because the mean of its divisors is an integer number (14976675).

Almost surely, 2^78544222 is an apocalyptic number.

78544222 is a deficient number, since it is larger than the sum of its proper divisors (41269178).

78544222 is a wasteful number, since it uses less digits than its factorization.

78544222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665690.

The product of its digits is 35840, while the sum is 34.

The square root of 78544222 is about 8862.5178138044. The cubic root of 78544222 is about 428.2572731892.

The spelling of 78544222 in words is "seventy-eight million, five hundred forty-four thousand, two hundred twenty-two".