74878222 has 16 divisors (see below), whose sum is σ = 115441920. Its totient is φ = 36405432.

The previous prime is 74878213. The next prime is 74878229. The reversal of 74878222 is 22287847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74878229) 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 7 ways as a sum of consecutive naturals, for example, 18733 + ... + 22375.

It is an arithmetic number, because the mean of its divisors is an integer number (7215120).

Almost surely, 2^74878222 is an apocalyptic number.

74878222 is a deficient number, since it is larger than the sum of its proper divisors (40563698).

74878222 is a wasteful number, since it uses less digits than its factorization.

74878222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3927.

The product of its digits is 100352, while the sum is 40.

The square root of 74878222 is about 8653.2203254049. The cubic root of 74878222 is about 421.4879611299.

The spelling of 74878222 in words is "seventy-four million, eight hundred seventy-eight thousand, two hundred twenty-two".