20248723 has 8 divisors (see below), whose sum is σ = 22127040. Its totient is φ = 18376680.

The previous prime is 20248691. The next prime is 20248729. The reversal of 20248723 is 32784202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20248723 - 2⁵ = 20248691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20248691 and 20248700.

It is not an unprimeable number, because it can be changed into a prime (20248729) 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 7 ways as a sum of consecutive naturals, for example, 7488 + ... + 9826.

It is an arithmetic number, because the mean of its divisors is an integer number (2765880).

Almost surely, 2^20248723 is an apocalyptic number.

20248723 is a deficient number, since it is larger than the sum of its proper divisors (1878317).

20248723 is a wasteful number, since it uses less digits than its factorization.

20248723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3137.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 20248723 is about 4499.8581088741. The cubic root of 20248723 is about 272.5623592661.

The spelling of 20248723 in words is "twenty million, two hundred forty-eight thousand, seven hundred twenty-three".