18083420 has 24 divisors (see below), whose sum is σ = 38102064. Its totient is φ = 7209216.

The previous prime is 18083411. The next prime is 18083423. The reversal of 18083420 is 2438081.

It is a self number, because there is not a number n which added to its sum of digits gives 18083420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18083423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5399 + ... + 8081.

It is an arithmetic number, because the mean of its divisors is an integer number (1587586).

Almost surely, 2^18083420 is an apocalyptic number.

18083420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18083420 is an abundant number, since it is smaller than the sum of its proper divisors (20018644).

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

18083420 is a wasteful number, since it uses less digits than its factorization.

18083420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3029 (or 3027 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 18083420 is about 4252.4604642489. The cubic root of 18083420 is about 262.4783716118.

The spelling of 18083420 in words is "eighteen million, eighty-three thousand, four hundred twenty".