20733841 has 2 divisors, whose sum is σ = 20733842. Its totient is φ = 20733840.

The previous prime is 20733827. The next prime is 20733857. The reversal of 20733841 is 14833702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20061441 + 672400 = 4479^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 20733841 - 2¹⁵ = 20701073 is a prime.

It is a super-2 number, since 2×20733841² = 859784325226562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20733821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10366920 + 10366921.

It is an arithmetic number, because the mean of its divisors is an integer number (10366921).

Almost surely, 2^20733841 is an apocalyptic number.

It is an amenable number.

20733841 is a deficient number, since it is larger than the sum of its proper divisors (1).

20733841 is an equidigital number, since it uses as much as digits as its factorization.

20733841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20733841 is about 4553.4427634483. The cubic root of 20733841 is about 274.7218830128.

Subtracting from 20733841 its product of nonzero digits (4032), we obtain a square (20729809 = 4553²).

The spelling of 20733841 in words is "twenty million, seven hundred thirty-three thousand, eight hundred forty-one".