20427023 has 8 divisors (see below), whose sum is σ = 20697600. Its totient is φ = 20158488.

The previous prime is 20427007. The next prime is 20427031. The reversal of 20427023 is 32072402.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20427023 - 2⁴ = 20427007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20426986 and 20427004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20427923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30668 + ... + 31326.

It is an arithmetic number, because the mean of its divisors is an integer number (2587200).

Almost surely, 2^20427023 is an apocalyptic number.

20427023 is a deficient number, since it is larger than the sum of its proper divisors (270577).

20427023 is a wasteful number, since it uses less digits than its factorization.

20427023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 20427023 is about 4519.6264226150. The cubic root of 20427023 is about 273.3600378761.

Adding to 20427023 its reverse (32072402), we get a palindrome (52499425).

The spelling of 20427023 in words is "twenty million, four hundred twenty-seven thousand, twenty-three".