74243172 has 24 divisors (see below), whose sum is σ = 180766656. Its totient is φ = 23671648.

The previous prime is 74243159. The next prime is 74243189. The reversal of 74243172 is 27134247.

74243172 is nontrivially palindromic in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134223 + ... + 134774.

It is an arithmetic number, because the mean of its divisors is an integer number (7531944).

Almost surely, 2^74243172 is an apocalyptic number.

It is an amenable number.

74243172 is an abundant number, since it is smaller than the sum of its proper divisors (106523484).

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

74243172 is a wasteful number, since it uses less digits than its factorization.

74243172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269027 (or 269025 counting only the distinct ones).

The product of its digits is 9408, while the sum is 30.

The square root of 74243172 is about 8616.4477599531. The cubic root of 74243172 is about 420.2930154831.

The spelling of 74243172 in words is "seventy-four million, two hundred forty-three thousand, one hundred seventy-two".