20500023 has 8 divisors (see below), whose sum is σ = 27589248. Its totient is φ = 13538744.

The previous prime is 20500019. The next prime is 20500027. The reversal of 20500023 is 32000502.

It is an interprime number because it is at equal distance from previous prime (20500019) and next prime (20500027).

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 20500023 - 2² = 20500019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20499981 and 20500008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20500027) 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, 31611 + ... + 32252.

It is an arithmetic number, because the mean of its divisors is an integer number (3448656).

Almost surely, 2^20500023 is an apocalyptic number.

20500023 is a deficient number, since it is larger than the sum of its proper divisors (7089225).

20500023 is a wasteful number, since it uses less digits than its factorization.

20500023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63973.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 20500023 is about 4527.6951089931. The cubic root of 20500023 is about 273.6852860937.

Adding to 20500023 its reverse (32000502), we get a palindrome (52500525).

The spelling of 20500023 in words is "twenty million, five hundred thousand, twenty-three".