74821224 has 32 divisors (see below), whose sum is σ = 187416000. Its totient is φ = 24892032.

The previous prime is 74821217. The next prime is 74821261. The reversal of 74821224 is 42212847.

It is a junction number, because it is equal to n+sod(n) for n = 74821191 and 74821200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10917 + ... + 16395.

It is an arithmetic number, because the mean of its divisors is an integer number (5856750).

Almost surely, 2^74821224 is an apocalyptic number.

It is an amenable number.

74821224 is an abundant number, since it is smaller than the sum of its proper divisors (112594776).

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

74821224 is a wasteful number, since it uses less digits than its factorization.

74821224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6057 (or 6053 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 74821224 is about 8649.9262424601. The cubic root of 74821224 is about 421.3809871282.

The spelling of 74821224 in words is "seventy-four million, eight hundred twenty-one thousand, two hundred twenty-four".