18283420 has 24 divisors (see below), whose sum is σ = 38486448. Its totient is φ = 7296000.

The previous prime is 18283409. The next prime is 18283457. The reversal of 18283420 is 2438281.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10620 + ... + 12220.

It is an arithmetic number, because the mean of its divisors is an integer number (1603602).

Almost surely, 2^18283420 is an apocalyptic number.

18283420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18283420 is an abundant number, since it is smaller than the sum of its proper divisors (20203028).

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

18283420 is a wasteful number, since it uses less digits than its factorization.

18283420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181 (or 2179 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 18283420 is about 4275.9115987120. The cubic root of 18283420 is about 263.4424835486.

The spelling of 18283420 in words is "eighteen million, two hundred eighty-three thousand, four hundred twenty".