74734144 has 56 divisors (see below), whose sum is σ = 160020000. Its totient is φ = 34513920.

The previous prime is 74734141. The next prime is 74734147. The reversal of 74734144 is 44143747.

It is an interprime number because it is at equal distance from previous prime (74734141) and next prime (74734147).

It is not an unprimeable number, because it can be changed into a prime (74734141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49107 + ... + 50605.

It is an arithmetic number, because the mean of its divisors is an integer number (2857500).

Almost surely, 2^74734144 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 74734144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80010000).

74734144 is an abundant number, since it is smaller than the sum of its proper divisors (85285856).

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

74734144 is a wasteful number, since it uses less digits than its factorization.

74734144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571 (or 1561 counting only the distinct ones).

The product of its digits is 37632, while the sum is 34.

The square root of 74734144 is about 8644.8912081067. The cubic root of 74734144 is about 421.2174501936.

The spelling of 74734144 in words is "seventy-four million, seven hundred thirty-four thousand, one hundred forty-four".