18094720 has 96 divisors (see below), whose sum is σ = 50407380. Its totient is φ = 6193152.

The previous prime is 18094717. The next prime is 18094723. The reversal of 18094720 is 2749081.

It is an interprime number because it is at equal distance from previous prime (18094717) and next prime (18094723).

It can be written as a sum of positive squares in 2 ways, for example, as 16711744 + 1382976 = 4088^2 + 1176^2 .

It is not an unprimeable number, because it can be changed into a prime (18094723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31072 + ... + 31648.

Almost surely, 2^18094720 is an apocalyptic number.

18094720 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 18094720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25203690).

18094720 is an abundant number, since it is smaller than the sum of its proper divisors (32312660).

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

18094720 is an equidigital number, since it uses as much as digits as its factorization.

18094720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 18094720 is about 4253.7888993226. The cubic root of 18094720 is about 262.5330328800.

The spelling of 18094720 in words is "eighteen million, ninety-four thousand, seven hundred twenty".