20826199 has 2 divisors, whose sum is σ = 20826200. Its totient is φ = 20826198.

The previous prime is 20826167. The next prime is 20826209. The reversal of 20826199 is 99162802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20826199 - 2⁵ = 20826167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20827199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10413099 + 10413100.

It is an arithmetic number, because the mean of its divisors is an integer number (10413100).

Almost surely, 2^20826199 is an apocalyptic number.

20826199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20826199 is an equidigital number, since it uses as much as digits as its factorization.

20826199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 20826199 is about 4563.5730518969. The cubic root of 20826199 is about 275.1291910890.

It can be divided in two parts, 20826 and 199, that added together give a square (21025 = 145²).

The spelling of 20826199 in words is "twenty million, eight hundred twenty-six thousand, one hundred ninety-nine".