72906122 has 16 divisors (see below), whose sum is σ = 111625152. Its totient is φ = 35704800.

The previous prime is 72906109. The next prime is 72906133. The reversal of 72906122 is 22160927.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20393 + ... + 23699.

It is an arithmetic number, because the mean of its divisors is an integer number (6976572).

Almost surely, 2^72906122 is an apocalyptic number.

72906122 is a deficient number, since it is larger than the sum of its proper divisors (38719030).

72906122 is a wasteful number, since it uses less digits than its factorization.

72906122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 72906122 is about 8538.5081835178. The cubic root of 72906122 is about 417.7546884455.

The spelling of 72906122 in words is "seventy-two million, nine hundred six thousand, one hundred twenty-two".