72508173 has 8 divisors (see below), whose sum is σ = 96805728. Its totient is φ = 48274704.

The previous prime is 72508171. The next prime is 72508201. The reversal of 72508173 is 37180527.

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

It is not a de Polignac number, because 72508173 - 2¹ = 72508171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72508171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13315 + ... + 17952.

It is an arithmetic number, because the mean of its divisors is an integer number (12100716).

Almost surely, 2^72508173 is an apocalyptic number.

It is an amenable number.

72508173 is a deficient number, since it is larger than the sum of its proper divisors (24297555).

72508173 is a wasteful number, since it uses less digits than its factorization.

72508173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32043.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 72508173 is about 8515.1731045235. The cubic root of 72508173 is about 416.9932139514.

The spelling of 72508173 in words is "seventy-two million, five hundred eight thousand, one hundred seventy-three".