20727252 has 240 divisors, whose sum is σ = 72096640. Its totient is φ = 5038848.

The previous prime is 20727227. The next prime is 20727253. The reversal of 20727252 is 25272702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20727253) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 560178 + ... + 560214.

Almost surely, 2^20727252 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 20727252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36048320).

20727252 is an abundant number, since it is smaller than the sum of its proper divisors (51369388).

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

20727252 is a wasteful number, since it uses less digits than its factorization.

20727252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 20727252 is about 4552.7191874747. The cubic root of 20727252 is about 274.6927786729.

Adding to 20727252 its reverse (25272702), we get a palindrome (45999954).

The spelling of 20727252 in words is "twenty million, seven hundred twenty-seven thousand, two hundred fifty-two".