18839272 has 16 divisors (see below), whose sum is σ = 35373600. Its totient is φ = 9406320.

The previous prime is 18839267. The next prime is 18839273. The reversal of 18839272 is 27293881.

It is not an unprimeable number, because it can be changed into a prime (18839273) 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, 6997 + ... + 9307.

It is an arithmetic number, because the mean of its divisors is an integer number (2210850).

Almost surely, 2^18839272 is an apocalyptic number.

It is an amenable number.

18839272 is a deficient number, since it is larger than the sum of its proper divisors (16534328).

18839272 is a wasteful number, since it uses less digits than its factorization.

18839272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336 (or 3332 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 18839272 is about 4340.4230208587. The cubic root of 18839272 is about 266.0856000534.

The spelling of 18839272 in words is "eighteen million, eight hundred thirty-nine thousand, two hundred seventy-two".