20419927 has 16 divisors (see below), whose sum is σ = 24030720. Its totient is φ = 17150400.

The previous prime is 20419897. The next prime is 20419943. The reversal of 20419927 is 72991402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20419927 - 2²³ = 12031319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20419892 and 20419901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20419957) 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, 7378 + ... + 9760.

It is an arithmetic number, because the mean of its divisors is an integer number (1501920).

Almost surely, 2^20419927 is an apocalyptic number.

20419927 is a deficient number, since it is larger than the sum of its proper divisors (3610793).

20419927 is a wasteful number, since it uses less digits than its factorization.

20419927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 20419927 is about 4518.8413337934. The cubic root of 20419927 is about 273.3283806691.

The spelling of 20419927 in words is "twenty million, four hundred nineteen thousand, nine hundred twenty-seven".