20838363 has 32 divisors (see below), whose sum is σ = 35137536. Its totient is φ = 10689408.

The previous prime is 20838329. The next prime is 20838401. The reversal of 20838363 is 36383802.

It is not a de Polignac number, because 20838363 - 2²² = 16644059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20838163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9070 + ... + 11132.

It is an arithmetic number, because the mean of its divisors is an integer number (1098048).

Almost surely, 2^20838363 is an apocalyptic number.

20838363 is a deficient number, since it is larger than the sum of its proper divisors (14299173).

20838363 is a wasteful number, since it uses less digits than its factorization.

20838363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2123.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 20838363 is about 4564.9055850039. The cubic root of 20838363 is about 275.1827457507.

The spelling of 20838363 in words is "twenty million, eight hundred thirty-eight thousand, three hundred sixty-three".