18340120 has 64 divisors (see below), whose sum is σ = 43273440. Its totient is φ = 6988800.

The previous prime is 18340061. The next prime is 18340139. The reversal of 18340120 is 2104381.

It is a super-2 number, since 2×18340120² = 672720003228800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86815 + ... + 87025.

Almost surely, 2^18340120 is an apocalyptic number.

18340120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18340120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21636720).

18340120 is an abundant number, since it is smaller than the sum of its proper divisors (24933320).

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

18340120 is a wasteful number, since it uses less digits than its factorization.

18340120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 18340120 is about 4282.5366314837. The cubic root of 18340120 is about 263.7145291951.

The spelling of 18340120 in words is "eighteen million, three hundred forty thousand, one hundred twenty".