18234426 has 32 divisors (see below), whose sum is σ = 41996160. Its totient is φ = 5170176.

The previous prime is 18234383. The next prime is 18234427. The reversal of 18234426 is 62443281.

It is a junction number, because it is equal to n+sod(n) for n = 18234393 and 18234402.

It is not an unprimeable number, because it can be changed into a prime (18234427) 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, 4170 + ... + 7338.

It is an arithmetic number, because the mean of its divisors is an integer number (1312380).

Almost surely, 2^18234426 is an apocalyptic number.

18234426 is an abundant number, since it is smaller than the sum of its proper divisors (23761734).

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

18234426 is a wasteful number, since it uses less digits than its factorization.

18234426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318.

The product of its digits is 9216, while the sum is 30.

The square root of 18234426 is about 4270.1786847859. The cubic root of 18234426 is about 263.2069578234.

The spelling of 18234426 in words is "eighteen million, two hundred thirty-four thousand, four hundred twenty-six".