18106772 has 12 divisors (see below), whose sum is σ = 33354720. Its totient is φ = 8576856.

The previous prime is 18106763. The next prime is 18106787. The reversal of 18106772 is 27760181.

It is a congruent number.

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, 119048 + ... + 119199.

It is an arithmetic number, because the mean of its divisors is an integer number (2779560).

Almost surely, 2^18106772 is an apocalyptic number.

It is an amenable number.

18106772 is a deficient number, since it is larger than the sum of its proper divisors (15247948).

18106772 is a wasteful number, since it uses less digits than its factorization.

18106772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238270 (or 238268 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 18106772 is about 4255.2052829446. The cubic root of 18106772 is about 262.5913067098.

The spelling of 18106772 in words is "eighteen million, one hundred six thousand, seven hundred seventy-two".