72881173 has 8 divisors (see below), whose sum is σ = 74701088. Its totient is φ = 71067024.

The previous prime is 72881167. The next prime is 72881183. The reversal of 72881173 is 37118827.

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 72881173 - 2⁵ = 72881141 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 (72881143) 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, 35686 + ... + 37672.

It is an arithmetic number, because the mean of its divisors is an integer number (9337636).

Almost surely, 2^72881173 is an apocalyptic number.

It is an amenable number.

72881173 is a deficient number, since it is larger than the sum of its proper divisors (1819915).

72881173 is a wasteful number, since it uses less digits than its factorization.

72881173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883.

The product of its digits is 18816, while the sum is 37.

The square root of 72881173 is about 8537.0470890115. The cubic root of 72881173 is about 417.7070301211.

The spelling of 72881173 in words is "seventy-two million, eight hundred eighty-one thousand, one hundred seventy-three".