20965273 has 16 divisors (see below), whose sum is σ = 25030144. Its totient is φ = 17184960.

The previous prime is 20965271. The next prime is 20965279. The reversal of 20965273 is 37256902.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20965273 - 2¹ = 20965271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20965271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15136 + ... + 16462.

It is an arithmetic number, because the mean of its divisors is an integer number (1564384).

Almost surely, 2^20965273 is an apocalyptic number.

It is an amenable number.

20965273 is a deficient number, since it is larger than the sum of its proper divisors (4064871).

20965273 is a wasteful number, since it uses less digits than its factorization.

20965273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 20965273 is about 4578.7851008756. The cubic root of 20965273 is about 275.7402557007.

The spelling of 20965273 in words is "twenty million, nine hundred sixty-five thousand, two hundred seventy-three".