74309172 has 48 divisors (see below), whose sum is σ = 203521920. Its totient is φ = 20656512.

The previous prime is 74309161. The next prime is 74309173. The reversal of 74309172 is 27190347.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74309173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8847 + ... + 15062.

It is an arithmetic number, because the mean of its divisors is an integer number (4240040).

Almost surely, 2^74309172 is an apocalyptic number.

It is an amenable number.

74309172 is an abundant number, since it is smaller than the sum of its proper divisors (129212748).

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

74309172 is a wasteful number, since it uses less digits than its factorization.

74309172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23960 (or 23958 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 74309172 is about 8620.2767936998. The cubic root of 74309172 is about 420.4175213131.

The spelling of 74309172 in words is "seventy-four million, three hundred nine thousand, one hundred seventy-two".