20302963 has 4 divisors (see below), whose sum is σ = 21371560. Its totient is φ = 19234368.

The previous prime is 20302957. The next prime is 20302967. The reversal of 20302963 is 36920302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20302963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20302967) 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, 534270 + ... + 534307.

It is an arithmetic number, because the mean of its divisors is an integer number (5342890).

Almost surely, 2^20302963 is an apocalyptic number.

20302963 is a deficient number, since it is larger than the sum of its proper divisors (1068597).

20302963 is a wasteful number, since it uses less digits than its factorization.

20302963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068596.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 20302963 is about 4505.8809349560. The cubic root of 20302963 is about 272.8055120746.

The spelling of 20302963 in words is "twenty million, three hundred two thousand, nine hundred sixty-three".