74172960 has 144 divisors (see below), whose sum is σ = 266535360. Its totient is φ = 18731520.

The previous prime is 74172949. The next prime is 74172961. The reversal of 74172960 is 6927147.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74172961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26005 + ... + 28715.

It is an arithmetic number, because the mean of its divisors is an integer number (1850940).

Almost surely, 2^74172960 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 74172960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133267680).

74172960 is an abundant number, since it is smaller than the sum of its proper divisors (192362400).

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

74172960 is a wasteful number, since it uses less digits than its factorization.

74172960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751 (or 2740 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 74172960 is about 8612.3724954277. The cubic root of 74172960 is about 420.1604828890.

The spelling of 74172960 in words is "seventy-four million, one hundred seventy-two thousand, nine hundred sixty".