20123793 has 24 divisors (see below), whose sum is σ = 30856800. Its totient is φ = 12602304.

The previous prime is 20123783. The next prime is 20123809. The reversal of 20123793 is 39732102.

It is not a de Polignac number, because 20123793 - 2¹⁶ = 20058257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20123713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22998 + ... + 23856.

It is an arithmetic number, because the mean of its divisors is an integer number (1285700).

Almost surely, 2^20123793 is an apocalyptic number.

It is an amenable number.

20123793 is a deficient number, since it is larger than the sum of its proper divisors (10733007).

20123793 is a wasteful number, since it uses less digits than its factorization.

20123793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 20123793 is about 4485.9550822539. The cubic root of 20123793 is about 272.0006532928. Note that the first 3 decimals are identical.

Adding to 20123793 its reverse (39732102), we get a palindrome (59855895).

The spelling of 20123793 in words is "twenty million, one hundred twenty-three thousand, seven hundred ninety-three".