20323923 has 8 divisors (see below), whose sum is σ = 27120528. Its totient is φ = 13538304.

The previous prime is 20323921. The next prime is 20323943. The reversal of 20323923 is 32932302.

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

It is not a de Polignac number, because 20323923 - 2¹ = 20323921 is a prime.

It is a super-2 number, since 2×20323923² = 826123692219858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20323893 and 20323902.

It is not an unprimeable number, because it can be changed into a prime (20323921) 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, 3811 + ... + 7427.

It is an arithmetic number, because the mean of its divisors is an integer number (3390066).

Almost surely, 2^20323923 is an apocalyptic number.

20323923 is a deficient number, since it is larger than the sum of its proper divisors (6796605).

20323923 is a wasteful number, since it uses less digits than its factorization.

20323923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5493.

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 20323923 is about 4508.2061842822. The cubic root of 20323923 is about 272.8993577689.

The spelling of 20323923 in words is "twenty million, three hundred twenty-three thousand, nine hundred twenty-three".