74520440 has 16 divisors (see below), whose sum is σ = 167671080. Its totient is φ = 29808160.

The previous prime is 74520431. The next prime is 74520443. The reversal of 74520440 is 4402547.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74520443) 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 3 ways as a sum of consecutive naturals, for example, 931466 + ... + 931545.

Almost surely, 2^74520440 is an apocalyptic number.

It is an amenable number.

74520440 is an abundant number, since it is smaller than the sum of its proper divisors (93150640).

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

74520440 is a wasteful number, since it uses less digits than its factorization.

74520440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863022 (or 1863018 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 74520440 is about 8632.5222270203. The cubic root of 74520440 is about 420.8155732356.

Adding to 74520440 its reverse (4402547), we get a palindrome (78922987).

The spelling of 74520440 in words is "seventy-four million, five hundred twenty thousand, four hundred forty".