72908122 has 8 divisors (see below), whose sum is σ = 124985376. Its totient is φ = 31246332.

The previous prime is 72908119. The next prime is 72908123. The reversal of 72908122 is 22180927.

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 (72908123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2603848 + ... + 2603875.

It is an arithmetic number, because the mean of its divisors is an integer number (15623172).

Almost surely, 2^72908122 is an apocalyptic number.

72908122 is a deficient number, since it is larger than the sum of its proper divisors (52077254).

72908122 is a wasteful number, since it uses less digits than its factorization.

72908122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5207732.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 72908122 is about 8538.6252991919. The cubic root of 72908122 is about 417.7585084344.

The spelling of 72908122 in words is "seventy-two million, nine hundred eight thousand, one hundred twenty-two".