18294420 has 24 divisors (see below), whose sum is σ = 51224544. Its totient is φ = 4878496.

The previous prime is 18294413. The next prime is 18294439. The reversal of 18294420 is 2449281.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152394 + ... + 152513.

It is an arithmetic number, because the mean of its divisors is an integer number (2134356).

Almost surely, 2^18294420 is an apocalyptic number.

18294420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18294420 is an abundant number, since it is smaller than the sum of its proper divisors (32930124).

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

18294420 is a wasteful number, since it uses less digits than its factorization.

18294420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304919 (or 304917 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18294420 is about 4277.1976807251. The cubic root of 18294420 is about 263.4953052920.

The spelling of 18294420 in words is "eighteen million, two hundred ninety-four thousand, four hundred twenty".