20271732 has 48 divisors (see below), whose sum is σ = 51273600. Its totient is φ = 6196608.

The previous prime is 20271697. The next prime is 20271733. The reversal of 20271732 is 23717202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20271733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30718 + ... + 31370.

It is an arithmetic number, because the mean of its divisors is an integer number (1068200).

Almost surely, 2^20271732 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 20271732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25636800).

20271732 is an abundant number, since it is smaller than the sum of its proper divisors (31001868).

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

20271732 is a wasteful number, since it uses less digits than its factorization.

20271732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 20271732 is about 4502.4140191679. The cubic root of 20271732 is about 272.6655594102.

Adding to 20271732 its reverse (23717202), we get a palindrome (43988934).

The spelling of 20271732 in words is "twenty million, two hundred seventy-one thousand, seven hundred thirty-two".