18454272 has 36 divisors (see below), whose sum is σ = 49117320. Its totient is φ = 6151168.

The previous prime is 18454253. The next prime is 18454297. The reversal of 18454272 is 27245481.

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, 11247 + ... + 12782.

It is an arithmetic number, because the mean of its divisors is an integer number (1364370).

Almost surely, 2^18454272 is an apocalyptic number.

18454272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18454272 is an abundant number, since it is smaller than the sum of its proper divisors (30663048).

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

18454272 is an equidigital number, since it uses as much as digits as its factorization.

18454272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24048 (or 24034 counting only the distinct ones).

The product of its digits is 17920, while the sum is 33.

The square root of 18454272 is about 4295.8435725710. The cubic root of 18454272 is about 264.2605325202.

The spelling of 18454272 in words is "eighteen million, four hundred fifty-four thousand, two hundred seventy-two".