18340022 has 4 divisors (see below), whose sum is σ = 27510036. Its totient is φ = 9170010.

The previous prime is 18340019. The next prime is 18340033. The reversal of 18340022 is 22004381.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 18339976 and 18340003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4585004 + ... + 4585007.

It is an arithmetic number, because the mean of its divisors is an integer number (6877509).

Almost surely, 2^18340022 is an apocalyptic number.

18340022 is a deficient number, since it is larger than the sum of its proper divisors (9170014).

18340022 is an equidigital number, since it uses as much as digits as its factorization.

18340022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9170013.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 18340022 is about 4282.5251896515. The cubic root of 18340022 is about 263.7140594768.

The spelling of 18340022 in words is "eighteen million, three hundred forty thousand, twenty-two".