20244364 has 48 divisors (see below), whose sum is σ = 42448896. Its totient is φ = 8265600.

The previous prime is 20244361. The next prime is 20244383. The reversal of 20244364 is 46344202.

It is not an unprimeable number, because it can be changed into a prime (20244361) 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 15 ways as a sum of consecutive naturals, for example, 71904 + ... + 72184.

It is an arithmetic number, because the mean of its divisors is an integer number (884352).

Almost surely, 2^20244364 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 20244364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21224448).

20244364 is an abundant number, since it is smaller than the sum of its proper divisors (22204532).

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

20244364 is a wasteful number, since it uses less digits than its factorization.

20244364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 20244364 is about 4499.3737341990. The cubic root of 20244364 is about 272.5427994386.

Adding to 20244364 its reverse (46344202), we get a palindrome (66588566).

The spelling of 20244364 in words is "twenty million, two hundred forty-four thousand, three hundred sixty-four".