18228754 has 4 divisors (see below), whose sum is σ = 27343134. Its totient is φ = 9114376.

The previous prime is 18228703. The next prime is 18228797. The reversal of 18228754 is 45782281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45782281 = 41 ⋅1116641.

It can be written as a sum of positive squares in only one way, i.e., 9138529 + 9090225 = 3023^2 + 3015^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4557187 + ... + 4557190.

Almost surely, 2^18228754 is an apocalyptic number.

18228754 is a deficient number, since it is larger than the sum of its proper divisors (9114380).

18228754 is an equidigital number, since it uses as much as digits as its factorization.

18228754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9114379.

The product of its digits is 35840, while the sum is 37.

The square root of 18228754 is about 4269.5144923047. The cubic root of 18228754 is about 263.1796639437.

The spelling of 18228754 in words is "eighteen million, two hundred twenty-eight thousand, seven hundred fifty-four".