20873963 has 8 divisors (see below), whose sum is σ = 23301696. Its totient is φ = 18534600.

The previous prime is 20873959. The next prime is 20873999. The reversal of 20873963 is 36937802.

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 20873963 - 2² = 20873959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20873953) 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, 21593 + ... + 22538.

It is an arithmetic number, because the mean of its divisors is an integer number (2912712).

Almost surely, 2^20873963 is an apocalyptic number.

20873963 is a deficient number, since it is larger than the sum of its proper divisors (2427733).

20873963 is a wasteful number, since it uses less digits than its factorization.

20873963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44185.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 20873963 is about 4568.8032349840. The cubic root of 20873963 is about 275.3393628563.

It can be divided in two parts, 208739 and 63, that added together give a palindrome (208802).

The spelling of 20873963 in words is "twenty million, eight hundred seventy-three thousand, nine hundred sixty-three".