74222247 has 24 divisors (see below), whose sum is σ = 109634560. Its totient is φ = 44629200.

The previous prime is 74222243. The next prime is 74222249.

74222247 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 74222247 - 2² = 74222243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74222243) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 49722 + ... + 51192.

Almost surely, 2^74222247 is an apocalyptic number.

74222247 is a deficient number, since it is larger than the sum of its proper divisors (35412313).

74222247 is a wasteful number, since it uses less digits than its factorization.

74222247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635 (or 1624 counting only the distinct ones).

The product of its digits is 12544, while the sum is 30.

The square root of 74222247 is about 8615.2334269014. The cubic root of 74222247 is about 420.2535260707.

It can be divided in two parts, 7422 and 2247, that added together give a palindrome (9669).

The spelling of 74222247 in words is "seventy-four million, two hundred twenty-two thousand, two hundred forty-seven".