74172146 has 8 divisors (see below), whose sum is σ = 111449520. Its totient is φ = 37022308.

The previous prime is 74172127. The next prime is 74172167. The reversal of 74172146 is 64127147.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30416 + ... + 32763.

It is an arithmetic number, because the mean of its divisors is an integer number (13931190).

Almost surely, 2^74172146 is an apocalyptic number.

74172146 is a deficient number, since it is larger than the sum of its proper divisors (37277374).

74172146 is a wasteful number, since it uses less digits than its factorization.

74172146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63768.

The product of its digits is 9408, while the sum is 32.

The square root of 74172146 is about 8612.3252377044. The cubic root of 74172146 is about 420.1589458874.

The spelling of 74172146 in words is "seventy-four million, one hundred seventy-two thousand, one hundred forty-six".