20237056 has 72 divisors (see below), whose sum is σ = 48271104. Its totient is φ = 8279040.

The previous prime is 20237053. The next prime is 20237093. The reversal of 20237056 is 65073202.

It is a self number, because there is not a number n which added to its sum of digits gives 20237056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20237051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40971 + ... + 41461.

It is an arithmetic number, because the mean of its divisors is an integer number (670432).

Almost surely, 2^20237056 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 20237056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24135552).

20237056 is an abundant number, since it is smaller than the sum of its proper divisors (28034048).

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

20237056 is an equidigital number, since it uses as much as digits as its factorization.

20237056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 20237056 is about 4498.5615478728. The cubic root of 20237056 is about 272.5100004747.

The spelling of 20237056 in words is "twenty million, two hundred thirty-seven thousand, fifty-six".