74612224 has 40 divisors (see below), whose sum is σ = 152590680. Its totient is φ = 36427776.

The previous prime is 74612177. The next prime is 74612231. The reversal of 74612224 is 42221647.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 74612192 and 74612201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20322 + ... + 23710.

It is an arithmetic number, because the mean of its divisors is an integer number (3814767).

Almost surely, 2^74612224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74612224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76295340).

74612224 is an abundant number, since it is smaller than the sum of its proper divisors (77978456).

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

74612224 is an equidigital number, since it uses as much as digits as its factorization.

74612224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450 (or 3434 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 74612224 is about 8637.8367662280. The cubic root of 74612224 is about 420.9882698815.

The spelling of 74612224 in words is "seventy-four million, six hundred twelve thousand, two hundred twenty-four".