74222428 has 24 divisors (see below), whose sum is σ = 149123072. Its totient is φ = 31664304.

The previous prime is 74222411. The next prime is 74222437. The reversal of 74222428 is 82422247.

It is a self number, because there is not a number n which added to its sum of digits gives 74222428.

It is a congruent number.

It is an unprimeable number.

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, 301 + ... + 12187.

Almost surely, 2^74222428 is an apocalyptic number.

It is an amenable number.

74222428 is an abundant number, since it is smaller than the sum of its proper divisors (74900644).

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

74222428 is a wasteful number, since it uses less digits than its factorization.

74222428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12121 (or 12119 counting only the distinct ones).

The product of its digits is 14336, while the sum is 31.

The square root of 74222428 is about 8615.2439315437. The cubic root of 74222428 is about 420.2538676836.

The spelling of 74222428 in words is "seventy-four million, two hundred twenty-two thousand, four hundred twenty-eight".