20955233 has 16 divisors (see below), whose sum is σ = 24319680. Its totient is φ = 17889984.

The previous prime is 20955227. The next prime is 20955241. The reversal of 20955233 is 33255902.

It is a cyclic number.

It is not a de Polignac number, because 20955233 - 2¹⁰ = 20954209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20955196 and 20955205.

It is not an unprimeable number, because it can be changed into a prime (20955293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9635 + ... + 11607.

It is an arithmetic number, because the mean of its divisors is an integer number (1519980).

Almost surely, 2^20955233 is an apocalyptic number.

It is an amenable number.

20955233 is a deficient number, since it is larger than the sum of its proper divisors (3364447).

20955233 is a wasteful number, since it uses less digits than its factorization.

20955233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 20955233 is about 4577.6886088942. The cubic root of 20955233 is about 275.6962325168.

The spelling of 20955233 in words is "twenty million, nine hundred fifty-five thousand, two hundred thirty-three".