18428112 has 30 divisors (see below), whose sum is σ = 51573522. Its totient is φ = 6142656.

The previous prime is 18428101. The next prime is 18428131. The reversal of 18428112 is 21182481.

It can be written as a sum of positive squares in only one way, i.e., 17943696 + 484416 = 4236^2 + 696^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63843 + ... + 64130.

Almost surely, 2^18428112 is an apocalyptic number.

18428112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18428112 is an abundant number, since it is smaller than the sum of its proper divisors (33145410).

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

18428112 is a wasteful number, since it uses less digits than its factorization.

18428112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127987 (or 127978 counting only the distinct ones).

The product of its digits is 1024, while the sum is 27.

The square root of 18428112 is about 4292.7976891533. The cubic root of 18428112 is about 264.1356052647.

The spelling of 18428112 in words is "eighteen million, four hundred twenty-eight thousand, one hundred twelve".