74213224 has 16 divisors (see below), whose sum is σ = 139649220. Its totient is φ = 36973440.

The previous prime is 74213207. The next prime is 74213257. The reversal of 74213224 is 42231247.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 73650724 + 562500 = 8582^2 + 750^2 .

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 3 ways as a sum of consecutive naturals, for example, 14259 + ... + 18754.

Almost surely, 2^74213224 is an apocalyptic number.

It is an amenable number.

74213224 is a deficient number, since it is larger than the sum of its proper divisors (65435996).

74213224 is a wasteful number, since it uses less digits than its factorization.

74213224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33300 (or 33296 counting only the distinct ones).

The product of its digits is 2688, while the sum is 25.

The square root of 74213224 is about 8614.7097455457. The cubic root of 74213224 is about 420.2364956816.

The spelling of 74213224 in words is "seventy-four million, two hundred thirteen thousand, two hundred twenty-four".