20841272 has 8 divisors (see below), whose sum is σ = 39077400. Its totient is φ = 10420632.

The previous prime is 20841263. The next prime is 20841277. The reversal of 20841272 is 27214802.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20841277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302572 + ... + 1302587.

It is an arithmetic number, because the mean of its divisors is an integer number (4884675).

Almost surely, 2^20841272 is an apocalyptic number.

It is an amenable number.

20841272 is a deficient number, since it is larger than the sum of its proper divisors (18236128).

20841272 is a wasteful number, since it uses less digits than its factorization.

20841272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605165 (or 2605161 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 20841272 is about 4565.2242004090. The cubic root of 20841272 is about 275.1955501692.

The spelling of 20841272 in words is "twenty million, eight hundred forty-one thousand, two hundred seventy-two".