20814299 has 18 divisors (see below), whose sum is σ = 23772420. Its totient is φ = 18209400.

The previous prime is 20814281. The next prime is 20814317. The reversal of 20814299 is 99241802.

It is an interprime number because it is at equal distance from previous prime (20814281) and next prime (20814317).

It is not a de Polignac number, because 20814299 - 2⁸ = 20814043 is a prime.

It is a super-2 number, since 2×20814299² = 866470085722802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20814259) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 116192 + ... + 116370.

It is an arithmetic number, because the mean of its divisors is an integer number (1320690).

Almost surely, 2^20814299 is an apocalyptic number.

20814299 is a deficient number, since it is larger than the sum of its proper divisors (2958121).

20814299 is a wasteful number, since it uses less digits than its factorization.

20814299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 20814299 is about 4562.2690626485. The cubic root of 20814299 is about 275.0767785618.

The spelling of 20814299 in words is "twenty million, eight hundred fourteen thousand, two hundred ninety-nine".