74463144 has 96 divisors (see below), whose sum is σ = 226048320. Its totient is φ = 20342784.

The previous prime is 74463131. The next prime is 74463149. The reversal of 74463144 is 44136447.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (74463149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25672 + ... + 28424.

It is an arithmetic number, because the mean of its divisors is an integer number (2354670).

Almost surely, 2^74463144 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 74463144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113024160).

74463144 is an abundant number, since it is smaller than the sum of its proper divisors (151585176).

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

74463144 is a wasteful number, since it uses less digits than its factorization.

74463144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799 (or 2788 counting only the distinct ones).

The product of its digits is 32256, while the sum is 33.

The square root of 74463144 is about 8629.2029759416. The cubic root of 74463144 is about 420.7076957589.

The spelling of 74463144 in words is "seventy-four million, four hundred sixty-three thousand, one hundred forty-four".