20799113 has 4 divisors (see below), whose sum is σ = 20858388. Its totient is φ = 20739840.

The previous prime is 20799101. The next prime is 20799127. The reversal of 20799113 is 31199702.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6901129 + 13897984 = 2627^2 + 3728^2 .

It is a cyclic number.

It is not a de Polignac number, because 20799113 - 2⁶ = 20799049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20799113.

It is not an unprimeable number, because it can be changed into a prime (20799133) 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, 29108 + ... + 29813.

It is an arithmetic number, because the mean of its divisors is an integer number (5214597).

Almost surely, 2^20799113 is an apocalyptic number.

It is an amenable number.

20799113 is a deficient number, since it is larger than the sum of its proper divisors (59275).

20799113 is an equidigital number, since it uses as much as digits as its factorization.

20799113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59274.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 20799113 is about 4560.6044555519. The cubic root of 20799113 is about 275.0098641090.

The spelling of 20799113 in words is "twenty million, seven hundred ninety-nine thousand, one hundred thirteen".