18246864 has 40 divisors (see below), whose sum is σ = 47635840. Its totient is φ = 6018048.

The previous prime is 18246863. The next prime is 18246881. The reversal of 18246864 is 46864281.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18246863) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2697 + ... + 6615.

It is an arithmetic number, because the mean of its divisors is an integer number (1190896).

Almost surely, 2^18246864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18246864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23817920).

18246864 is an abundant number, since it is smaller than the sum of its proper divisors (29388976).

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

18246864 is a wasteful number, since it uses less digits than its factorization.

18246864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4027 (or 4021 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 18246864 is about 4271.6348158521. The cubic root of 18246864 is about 263.2667901438.

It can be divided in two parts, 18246 and 864, that added together give a triangular number (19110 = T₁₉₅).

The spelling of 18246864 in words is "eighteen million, two hundred forty-six thousand, eight hundred sixty-four".