20874023 has 4 divisors (see below), whose sum is σ = 21227880. Its totient is φ = 20520168.

The previous prime is 20874013. The next prime is 20874059. The reversal of 20874023 is 32047802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20874023 - 2⁶ = 20873959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20873983 and 20874001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20874013) 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 3 ways as a sum of consecutive naturals, for example, 176840 + ... + 176957.

It is an arithmetic number, because the mean of its divisors is an integer number (5306970).

Almost surely, 2^20874023 is an apocalyptic number.

20874023 is a deficient number, since it is larger than the sum of its proper divisors (353857).

20874023 is an equidigital number, since it uses as much as digits as its factorization.

20874023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353856.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 20874023 is about 4568.8098012502. The cubic root of 20874023 is about 275.3396266673.

The spelling of 20874023 in words is "twenty million, eight hundred seventy-four thousand, twenty-three".