18460000 has 120 divisors (see below), whose sum is σ = 49596624. Its totient is φ = 6720000.

The previous prime is 18459997. The next prime is 18460031. The reversal of 18460000 is 6481.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18460000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 259965 + ... + 260035.

Almost surely, 2^18460000 is an apocalyptic number.

18460000 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 18460000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24798312).

18460000 is an abundant number, since it is smaller than the sum of its proper divisors (31136624).

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

18460000 is an equidigital number, since it uses as much as digits as its factorization.

18460000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 91 counting only the distinct ones).

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

The square root of 18460000 is about 4296.5102117882. The cubic root of 18460000 is about 264.2878708649.

Adding to 18460000 its reverse (6481), we get a palindrome (18466481).

The spelling of 18460000 in words is "eighteen million, four hundred sixty thousand".