20299163 has 4 divisors (see below), whose sum is σ = 21367560. Its totient is φ = 19230768.

The previous prime is 20299157. The next prime is 20299171. The reversal of 20299163 is 36199202.

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

It is a cyclic number.

It is not a de Polignac number, because 20299163 - 2⁶ = 20299099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20299063) 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, 534170 + ... + 534207.

It is an arithmetic number, because the mean of its divisors is an integer number (5341890).

Almost surely, 2^20299163 is an apocalyptic number.

20299163 is a deficient number, since it is larger than the sum of its proper divisors (1068397).

20299163 is a wasteful number, since it uses less digits than its factorization.

20299163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068396.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 20299163 is about 4505.4592440727. The cubic root of 20299163 is about 272.7884911497.

The spelling of 20299163 in words is "twenty million, two hundred ninety-nine thousand, one hundred sixty-three".