74730173 has 32 divisors (see below), whose sum is σ = 93772800. Its totient is φ = 58133376.

The previous prime is 74730169. The next prime is 74730193. The reversal of 74730173 is 37103747.

It is not a de Polignac number, because 74730173 - 2² = 74730169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74730133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 417398 + ... + 417576.

It is an arithmetic number, because the mean of its divisors is an integer number (2930400).

Almost surely, 2^74730173 is an apocalyptic number.

74730173 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

74730173 is a deficient number, since it is larger than the sum of its proper divisors (19042627).

74730173 is a wasteful number, since it uses less digits than its factorization.

74730173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321.

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 74730173 is about 8644.6615318357. The cubic root of 74730173 is about 421.2099895960.

The spelling of 74730173 in words is "seventy-four million, seven hundred thirty thousand, one hundred seventy-three".