20732841 has 10 divisors (see below), whose sum is σ = 30971402. Its totient is φ = 13821840.

The previous prime is 20732827. The next prime is 20732849. The reversal of 20732841 is 14823702.

It can be written as a sum of positive squares in only one way, i.e., 19053225 + 1679616 = 4365^2 + 1296^2 .

It is not a de Polignac number, because 20732841 - 2⁹ = 20732329 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20732849) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 127900 + ... + 128061.

Almost surely, 2^20732841 is an apocalyptic number.

It is an amenable number.

20732841 is a deficient number, since it is larger than the sum of its proper divisors (10238561).

20732841 is an equidigital number, since it uses as much as digits as its factorization.

20732841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255973 (or 255964 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20732841 is about 4553.3329551000. The cubic root of 20732841 is about 274.7174662994.

The spelling of 20732841 in words is "twenty million, seven hundred thirty-two thousand, eight hundred forty-one".