74211224 has 8 divisors (see below), whose sum is σ = 139146060. Its totient is φ = 37105608.

The previous prime is 74211223. The next prime is 74211227. The reversal of 74211224 is 42211247.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 74211224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74211223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4638194 + ... + 4638209.

Almost surely, 2^74211224 is an apocalyptic number.

It is an amenable number.

74211224 is a deficient number, since it is larger than the sum of its proper divisors (64934836).

74211224 is a wasteful number, since it uses less digits than its factorization.

74211224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9276409 (or 9276405 counting only the distinct ones).

The product of its digits is 896, while the sum is 23.

The square root of 74211224 is about 8614.5936642421. The cubic root of 74211224 is about 420.2327206107.

Adding to 74211224 its sum of digits (23), we get a palindrome (74211247).

The spelling of 74211224 in words is "seventy-four million, two hundred eleven thousand, two hundred twenty-four".