20124723 has 16 divisors (see below), whose sum is σ = 27711360. Its totient is φ = 12984576.

The previous prime is 20124661. The next prime is 20124733. The reversal of 20124723 is 32742102.

It is not a de Polignac number, because 20124723 - 2¹³ = 20116531 is a prime.

20124723 is a modest number, since divided by 24723 gives 201 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 20124723.

It is not an unprimeable number, because it can be changed into a prime (20124733) 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, 11011 + ... + 12707.

It is an arithmetic number, because the mean of its divisors is an integer number (1731960).

Almost surely, 2^20124723 is an apocalyptic number.

20124723 is a deficient number, since it is larger than the sum of its proper divisors (7586637).

20124723 is a wasteful number, since it uses less digits than its factorization.

20124723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20124723 is about 4486.0587379124. The cubic root of 20124723 is about 272.0048433033.

Adding to 20124723 its reverse (32742102), we get a palindrome (52866825).

The spelling of 20124723 in words is "twenty million, one hundred twenty-four thousand, seven hundred twenty-three".