20231806 has 12 divisors (see below), whose sum is σ = 35302608. Its totient is φ = 8670732.

The previous prime is 20231791. The next prime is 20231807. The reversal of 20231806 is 60813202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103126 + ... + 103321.

It is an arithmetic number, because the mean of its divisors is an integer number (2941884).

Almost surely, 2^20231806 is an apocalyptic number.

20231806 is a deficient number, since it is larger than the sum of its proper divisors (15070802).

20231806 is a wasteful number, since it uses less digits than its factorization.

20231806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206463 (or 206456 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 20231806 is about 4497.9779901640. The cubic root of 20231806 is about 272.4864331264.

The spelling of 20231806 in words is "twenty million, two hundred thirty-one thousand, eight hundred six".