20594240 has 56 divisors (see below), whose sum is σ = 49499520. Its totient is φ = 8160768.

The previous prime is 20594227. The next prime is 20594243. The reversal of 20594240 is 4249502.

It is not an unprimeable number, because it can be changed into a prime (20594243) 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, 44249 + ... + 44711.

It is an arithmetic number, because the mean of its divisors is an integer number (883920).

Almost surely, 2^20594240 is an apocalyptic number.

20594240 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 20594240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24749760).

20594240 is an abundant number, since it is smaller than the sum of its proper divisors (28905280).

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

20594240 is a wasteful number, since it uses less digits than its factorization.

20594240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20594240 is about 4538.0877029868. The cubic root of 20594240 is about 274.1039263356.

The spelling of 20594240 in words is "twenty million, five hundred ninety-four thousand, two hundred forty".