20263793 has 8 divisors (see below), whose sum is σ = 22620576. Its totient is φ = 17992800.

The previous prime is 20263783. The next prime is 20263811. The reversal of 20263793 is 39736202.

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 20263793 - 2⁶ = 20263729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20263723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20948 + ... + 21893.

It is an arithmetic number, because the mean of its divisors is an integer number (2827572).

Almost surely, 2^20263793 is an apocalyptic number.

It is an amenable number.

20263793 is a deficient number, since it is larger than the sum of its proper divisors (2356783).

20263793 is a wasteful number, since it uses less digits than its factorization.

20263793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42895.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 20263793 is about 4501.5322946748. The cubic root of 20263793 is about 272.6299601740.

Adding to 20263793 its reverse (39736202), we get a palindrome (59999995).

The spelling of 20263793 in words is "twenty million, two hundred sixty-three thousand, seven hundred ninety-three".