20955235 has 8 divisors (see below), whose sum is σ = 28738656. Its totient is φ = 14369280.

The previous prime is 20955227. The next prime is 20955241. The reversal of 20955235 is 53255902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20955235 - 2³ = 20955227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20955197 and 20955206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299326 + ... + 299395.

It is an arithmetic number, because the mean of its divisors is an integer number (3592332).

Almost surely, 2^20955235 is an apocalyptic number.

20955235 is a deficient number, since it is larger than the sum of its proper divisors (7783421).

20955235 is an equidigital number, since it uses as much as digits as its factorization.

20955235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598733.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 20955235 is about 4577.6888273451. The cubic root of 20955235 is about 275.6962412877.

The spelling of 20955235 in words is "twenty million, nine hundred fifty-five thousand, two hundred thirty-five".