74224440 has 48 divisors (see below), whose sum is σ = 241230600. Its totient is φ = 19793088.

The previous prime is 74224399. The next prime is 74224453. The reversal of 74224440 is 4442247.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102730 + ... + 103449.

Almost surely, 2^74224440 is an apocalyptic number.

It is an amenable number.

74224440 is an abundant number, since it is smaller than the sum of its proper divisors (167006160).

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

74224440 is a wasteful number, since it uses less digits than its factorization.

74224440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206196 (or 206189 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 74224440 is about 8615.3607005163. The cubic root of 74224440 is about 420.2576650225.

Adding to 74224440 its reverse (4442247), we get a palindrome (78666687).

The spelling of 74224440 in words is "seventy-four million, two hundred twenty-four thousand, four hundred forty".