18061230 has 64 divisors (see below), whose sum is σ = 47692800. Its totient is φ = 4341120.

The previous prime is 18061223. The next prime is 18061237. The reversal of 18061230 is 3216081.

It is an interprime number because it is at equal distance from previous prime (18061223) and next prime (18061237).

It is a super-2 number, since 2×18061230² = 652416058225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18061197 and 18061206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18061237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75451 + ... + 75689.

It is an arithmetic number, because the mean of its divisors is an integer number (745200).

Almost surely, 2^18061230 is an apocalyptic number.

18061230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18061230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23846400).

18061230 is an abundant number, since it is smaller than the sum of its proper divisors (29631570).

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

18061230 is a wasteful number, since it uses less digits than its factorization.

18061230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 18061230 is about 4249.8505856089. The cubic root of 18061230 is about 262.3709660612.

The spelling of 18061230 in words is "eighteen million, sixty-one thousand, two hundred thirty".