74523456 has 224 divisors, whose sum is σ = 257007360. Its totient is φ = 20736000.

The previous prime is 74523433. The next prime is 74523457. The reversal of 74523456 is 65432547.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a zygodrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 74523456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74523457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 737806 + ... + 737906.

Almost surely, 2^74523456 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 74523456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128503680).

74523456 is an abundant number, since it is smaller than the sum of its proper divisors (182483904).

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

74523456 is a wasteful number, since it uses less digits than its factorization.

74523456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 174 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 74523456 is about 8632.6969134796. The cubic root of 74523456 is about 420.8212502581.

Subtracting from 74523456 its reverse (65432547), we obtain a palindrome (9090909).

The spelling of 74523456 in words is "seventy-four million, five hundred twenty-three thousand, four hundred fifty-six".