72173235 has 8 divisors (see below), whose sum is σ = 115477200. Its totient is φ = 38492384.

The previous prime is 72173219. The next prime is 72173251. The reversal of 72173235 is 53237127.

It is an interprime number because it is at equal distance from previous prime (72173219) and next prime (72173251).

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

It is a cyclic number.

It is not a de Polignac number, because 72173235 - 2⁴ = 72173219 is a prime.

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, 2405760 + ... + 2405789.

It is an arithmetic number, because the mean of its divisors is an integer number (14434650).

Almost surely, 2^72173235 is an apocalyptic number.

72173235 is a deficient number, since it is larger than the sum of its proper divisors (43303965).

72173235 is a wasteful number, since it uses less digits than its factorization.

72173235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4811557.

The product of its digits is 8820, while the sum is 30.

The square root of 72173235 is about 8495.4832116837. The cubic root of 72173235 is about 416.3501485978.

The spelling of 72173235 in words is "seventy-two million, one hundred seventy-three thousand, two hundred thirty-five".