20467923 has 16 divisors (see below), whose sum is σ = 31484160. Its totient is φ = 11585376.

The previous prime is 20467913. The next prime is 20467927. The reversal of 20467923 is 32976402.

It is not a de Polignac number, because 20467923 - 2⁵ = 20467891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20467927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2308 + ... + 6801.

It is an arithmetic number, because the mean of its divisors is an integer number (1967760).

Almost surely, 2^20467923 is an apocalyptic number.

20467923 is a deficient number, since it is larger than the sum of its proper divisors (11016237).

20467923 is a wasteful number, since it uses less digits than its factorization.

20467923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9226.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 20467923 is about 4524.1488702296. The cubic root of 20467923 is about 273.5423612594.

The spelling of 20467923 in words is "twenty million, four hundred sixty-seven thousand, nine hundred twenty-three".