20094440 has 32 divisors (see below), whose sum is σ = 45792000. Its totient is φ = 7934784.

The previous prime is 20094413. The next prime is 20094443. The reversal of 20094440 is 4449002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20094443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20 + ... + 6339.

It is an arithmetic number, because the mean of its divisors is an integer number (1431000).

Almost surely, 2^20094440 is an apocalyptic number.

20094440 is a gapful number since it is divisible by the number (20) 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 20094440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22896000).

20094440 is an abundant number, since it is smaller than the sum of its proper divisors (25697560).

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

20094440 is a wasteful number, since it uses less digits than its factorization.

20094440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6449 (or 6445 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 20094440 is about 4482.6822327709. The cubic root of 20094440 is about 271.8683402605.

The spelling of 20094440 in words is "twenty million, ninety-four thousand, four hundred forty".