18272254 has 32 divisors (see below), whose sum is σ = 36804096. Its totient is φ = 6570720.

The previous prime is 18272251. The next prime is 18272269. The reversal of 18272254 is 45227281.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18272251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2562 + ... + 6565.

It is an arithmetic number, because the mean of its divisors is an integer number (1150128).

Almost surely, 2^18272254 is an apocalyptic number.

18272254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18272254 is an abundant number, since it is smaller than the sum of its proper divisors (18531842).

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

18272254 is a wasteful number, since it uses less digits than its factorization.

18272254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9160.

The product of its digits is 8960, while the sum is 31.

The square root of 18272254 is about 4274.6057128114. The cubic root of 18272254 is about 263.3888430043.

It can be divided in two parts, 18 and 272254, that added together give a palindrome (272272).

The spelling of 18272254 in words is "eighteen million, two hundred seventy-two thousand, two hundred fifty-four".