20963223 has 24 divisors (see below), whose sum is σ = 31489536. Its totient is φ = 13424400.

The previous prime is 20963219. The next prime is 20963273. The reversal of 20963223 is 32236902.

20963223 is a `hidden beast` number, since 2 + 0 + 9 + 632 + 23 = 666.

It is not a de Polignac number, because 20963223 - 2² = 20963219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20963273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63168 + ... + 63498.

It is an arithmetic number, because the mean of its divisors is an integer number (1312064).

Almost surely, 2^20963223 is an apocalyptic number.

20963223 is a deficient number, since it is larger than the sum of its proper divisors (10526313).

20963223 is a wasteful number, since it uses less digits than its factorization.

20963223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 20963223 is about 4578.5612368953. The cubic root of 20963223 is about 275.7312680452.

The spelling of 20963223 in words is "twenty million, nine hundred sixty-three thousand, two hundred twenty-three".