18934230 has 32 divisors (see below), whose sum is σ = 51934464. Its totient is φ = 4327776.

The previous prime is 18934219. The next prime is 18934231. The reversal of 18934230 is 3243981.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18934231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44872 + ... + 45291.

It is an arithmetic number, because the mean of its divisors is an integer number (1622952).

Almost surely, 2^18934230 is an apocalyptic number.

18934230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18934230 is an abundant number, since it is smaller than the sum of its proper divisors (33000234).

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

18934230 is a wasteful number, since it uses less digits than its factorization.

18934230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90180.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 18934230 is about 4351.3480669788. The cubic root of 18934230 is about 266.5319128195.

The spelling of 18934230 in words is "eighteen million, nine hundred thirty-four thousand, two hundred thirty".