18426430 has 32 divisors (see below), whose sum is σ = 36495360. Its totient is φ = 6642720.

The previous prime is 18426389. The next prime is 18426433. The reversal of 18426430 is 3462481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18426433) 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, 13311 + ... + 14629.

It is an arithmetic number, because the mean of its divisors is an integer number (1140480).

Almost surely, 2^18426430 is an apocalyptic number.

18426430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18426430 is a deficient number, since it is larger than the sum of its proper divisors (18068930).

18426430 is a wasteful number, since it uses less digits than its factorization.

18426430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 18426430 is about 4292.6017751476. The cubic root of 18426430 is about 264.1275688183.

The spelling of 18426430 in words is "eighteen million, four hundred twenty-six thousand, four hundred thirty".