20368823 has 8 divisors (see below), whose sum is σ = 21385728. Its totient is φ = 19362904.

The previous prime is 20368819. The next prime is 20368837. The reversal of 20368823 is 32886302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20368823 - 2² = 20368819 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 20368823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20368853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190 + ... + 6492.

It is an arithmetic number, because the mean of its divisors is an integer number (2673216).

Almost surely, 2^20368823 is an apocalyptic number.

20368823 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20368823 is a deficient number, since it is larger than the sum of its proper divisors (1016905).

20368823 is a wasteful number, since it uses less digits than its factorization.

20368823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5493.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 20368823 is about 4513.1832446733. The cubic root of 20368823 is about 273.1001747881.

The spelling of 20368823 in words is "twenty million, three hundred sixty-eight thousand, eight hundred twenty-three".