18622254 has 48 divisors (see below), whose sum is σ = 43838928. Its totient is φ = 5257728.

The previous prime is 18622243. The next prime is 18622267. The reversal of 18622254 is 45222681.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28192 + ... + 28844.

It is an arithmetic number, because the mean of its divisors is an integer number (913311).

Almost surely, 2^18622254 is an apocalyptic number.

18622254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18622254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21919464).

18622254 is an abundant number, since it is smaller than the sum of its proper divisors (25216674).

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

18622254 is a wasteful number, since it uses less digits than its factorization.

18622254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769 (or 762 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 18622254 is about 4315.3509706628. The cubic root of 18622254 is about 265.0599318585.

The spelling of 18622254 in words is "eighteen million, six hundred twenty-two thousand, two hundred fifty-four".