72122308 has 12 divisors (see below), whose sum is σ = 128353680. Its totient is φ = 35449832.

The previous prime is 72122293. The next prime is 72122327. The reversal of 72122308 is 80322127.

It is a super-2 number, since 2×72122308² = 10403254622493728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152566 + ... + 153037.

It is an arithmetic number, because the mean of its divisors is an integer number (10696140).

Almost surely, 2^72122308 is an apocalyptic number.

It is an amenable number.

72122308 is a deficient number, since it is larger than the sum of its proper divisors (56231372).

72122308 is a wasteful number, since it uses less digits than its factorization.

72122308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305666 (or 305664 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 72122308 is about 8492.4853841499. The cubic root of 72122308 is about 416.2521969902.

The spelling of 72122308 in words is "seventy-two million, one hundred twenty-two thousand, three hundred eight".