18346772 has 12 divisors (see below), whose sum is σ = 32419296. Its totient is φ = 9084120.

The previous prime is 18346747. The next prime is 18346777. The reversal of 18346772 is 27764381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18346777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21854 + ... + 22677.

It is an arithmetic number, because the mean of its divisors is an integer number (2701608).

Almost surely, 2^18346772 is an apocalyptic number.

It is an amenable number.

18346772 is a deficient number, since it is larger than the sum of its proper divisors (14072524).

18346772 is a wasteful number, since it uses less digits than its factorization.

18346772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44638 (or 44636 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 18346772 is about 4283.3132035843. The cubic root of 18346772 is about 263.7464086122.

The spelling of 18346772 in words is "eighteen million, three hundred forty-six thousand, seven hundred seventy-two".