20244288 has 56 divisors (see below), whose sum is σ = 54164992. Its totient is φ = 6672384.

The previous prime is 20244277. The next prime is 20244299. The reversal of 20244288 is 88244202.

It is an interprime number because it is at equal distance from previous prime (20244277) and next prime (20244299).

It is a congruent number.

It is an unprimeable number.

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, 18081 + ... + 19167.

It is an arithmetic number, because the mean of its divisors is an integer number (967232).

Almost surely, 2^20244288 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 20244288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27082496).

20244288 is an abundant number, since it is smaller than the sum of its proper divisors (33920704).

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

20244288 is a wasteful number, since it uses less digits than its factorization.

20244288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 20244288 is about 4499.3652885713. The cubic root of 20244288 is about 272.5424583843.

The spelling of 20244288 in words is "twenty million, two hundred forty-four thousand, two hundred eighty-eight".