18275420 has 12 divisors (see below), whose sum is σ = 38378424. Its totient is φ = 7310160.

The previous prime is 18275419. The next prime is 18275431. The reversal of 18275420 is 2457281.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456866 + ... + 456905.

It is an arithmetic number, because the mean of its divisors is an integer number (3198202).

Almost surely, 2^18275420 is an apocalyptic number.

18275420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18275420 is an abundant number, since it is smaller than the sum of its proper divisors (20103004).

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

18275420 is a wasteful number, since it uses less digits than its factorization.

18275420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913780 (or 913778 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 18275420 is about 4274.9760233246. The cubic root of 18275420 is about 263.4040544266.

The spelling of 18275420 in words is "eighteen million, two hundred seventy-five thousand, four hundred twenty".