18450030 has 32 divisors (see below), whose sum is σ = 44470944. Its totient is φ = 4898816.

The previous prime is 18450011. The next prime is 18450031. The reversal of 18450030 is 3005481.

18450030 is nontrivially palindromic in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 18449979 and 18450006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18450031) 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, 6514 + ... + 8906.

It is an arithmetic number, because the mean of its divisors is an integer number (1389717).

Almost surely, 2^18450030 is an apocalyptic number.

18450030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18450030 is an abundant number, since it is smaller than the sum of its proper divisors (26020914).

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

18450030 is a wasteful number, since it uses less digits than its factorization.

18450030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 18450030 is about 4295.3498111330. The cubic root of 18450030 is about 264.2402828442.

The spelling of 18450030 in words is "eighteen million, four hundred fifty thousand, thirty".