72258173 has 8 divisors (see below), whose sum is σ = 77998368. Its totient is φ = 66543984.

The previous prime is 72258167. The next prime is 72258187. The reversal of 72258173 is 37185227.

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

It is not a de Polignac number, because 72258173 - 2¹⁰ = 72257149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72258073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515 + ... + 12032.

It is an arithmetic number, because the mean of its divisors is an integer number (9749796).

Almost surely, 2^72258173 is an apocalyptic number.

It is an amenable number.

72258173 is a deficient number, since it is larger than the sum of its proper divisors (5740195).

72258173 is a wasteful number, since it uses less digits than its factorization.

72258173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13003.

The product of its digits is 23520, while the sum is 35.

The square root of 72258173 is about 8500.4807511105. The cubic root of 72258173 is about 416.5134135771.

The spelling of 72258173 in words is "seventy-two million, two hundred fifty-eight thousand, one hundred seventy-three".