20486123 has 32 divisors (see below), whose sum is σ = 26557440. Its totient is φ = 15396480.

The previous prime is 20486119. The next prime is 20486129. The reversal of 20486123 is 32168402.

It is a cyclic number.

It is not a de Polignac number, because 20486123 - 2² = 20486119 is a prime.

It is a super-2 number, since 2×20486123² = 839362471142258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20486092 and 20486101.

It is not an unprimeable number, because it can be changed into a prime (20486129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113093 + ... + 113273.

It is an arithmetic number, because the mean of its divisors is an integer number (829920).

Almost surely, 2^20486123 is an apocalyptic number.

20486123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20486123 is a deficient number, since it is larger than the sum of its proper divisors (6071317).

20486123 is a wasteful number, since it uses less digits than its factorization.

20486123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 20486123 is about 4526.1598513530. The cubic root of 20486123 is about 273.6234148523.

The spelling of 20486123 in words is "twenty million, four hundred eighty-six thousand, one hundred twenty-three".