74589456 has 20 divisors (see below), whose sum is σ = 192689552. Its totient is φ = 24863136.

The previous prime is 74589433. The next prime is 74589457. The reversal of 74589456 is 65498547.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1553947 = 74589456 / (7 + 4 + 5 + 8 + 9 + 4 + 5 + 6).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (74589457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776926 + ... + 777021.

Almost surely, 2^74589456 is an apocalyptic number.

It is an amenable number.

74589456 is an abundant number, since it is smaller than the sum of its proper divisors (118100096).

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

74589456 is a wasteful number, since it uses less digits than its factorization.

74589456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553958 (or 1553952 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 74589456 is about 8636.5187431048. The cubic root of 74589456 is about 420.9454438514.

Subtracting from 74589456 its reverse (65498547), we obtain a palindrome (9090909).

The spelling of 74589456 in words is "seventy-four million, five hundred eighty-nine thousand, four hundred fifty-six".