18741272 has 16 divisors (see below), whose sum is σ = 38334600. Its totient is φ = 8518720.

The previous prime is 18741269. The next prime is 18741287. The reversal of 18741272 is 27214781.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

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, 106397 + ... + 106572.

Almost surely, 2^18741272 is an apocalyptic number.

It is an amenable number.

18741272 is an abundant number, since it is smaller than the sum of its proper divisors (19593328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18741272 is a wasteful number, since it uses less digits than its factorization.

18741272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212986 (or 212982 counting only the distinct ones).

The product of its digits is 6272, while the sum is 32.

The square root of 18741272 is about 4329.1190789813. The cubic root of 18741272 is about 265.6234141912.

The spelling of 18741272 in words is "eighteen million, seven hundred forty-one thousand, two hundred seventy-two".