20983227 has 4 divisors (see below), whose sum is σ = 27977640. Its totient is φ = 13988816.

The previous prime is 20983189. The next prime is 20983229. The reversal of 20983227 is 72238902.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20983227 - 2⁷ = 20983099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20983229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3497202 + ... + 3497207.

It is an arithmetic number, because the mean of its divisors is an integer number (6994410).

Almost surely, 2^20983227 is an apocalyptic number.

20983227 is a deficient number, since it is larger than the sum of its proper divisors (6994413).

20983227 is an equidigital number, since it uses as much as digits as its factorization.

20983227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6994412.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20983227 is about 4580.7452450447. The cubic root of 20983227 is about 275.8189450017.

It can be divided in two parts, 209 and 83227, that added together give a triangular number (83436 = T₄₀₈).

The spelling of 20983227 in words is "twenty million, nine hundred eighty-three thousand, two hundred twenty-seven".