72117274 has 8 divisors (see below), whose sum is σ = 113869440. Its totient is φ = 34160796.

The previous prime is 72117271. The next prime is 72117307. The reversal of 72117274 is 47271127.

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

It is not an unprimeable number, because it can be changed into a prime (72117271) 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 3 ways as a sum of consecutive naturals, for example, 948874 + ... + 948949.

It is an arithmetic number, because the mean of its divisors is an integer number (14233680).

Almost surely, 2^72117274 is an apocalyptic number.

72117274 is a deficient number, since it is larger than the sum of its proper divisors (41752166).

72117274 is a wasteful number, since it uses less digits than its factorization.

72117274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897844.

The product of its digits is 5488, while the sum is 31.

The square root of 72117274 is about 8492.1889993099. The cubic root of 72117274 is about 416.2425122275.

The spelling of 72117274 in words is "seventy-two million, one hundred seventeen thousand, two hundred seventy-four".