20748423 has 16 divisors (see below), whose sum is σ = 28304640. Its totient is φ = 13516224.

The previous prime is 20748421. The next prime is 20748443. The reversal of 20748423 is 32484702.

It is not a de Polignac number, because 20748423 - 2¹ = 20748421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20748421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25243 + ... + 26051.

It is an arithmetic number, because the mean of its divisors is an integer number (1769040).

Almost surely, 2^20748423 is an apocalyptic number.

20748423 is a deficient number, since it is larger than the sum of its proper divisors (7556217).

20748423 is a wasteful number, since it uses less digits than its factorization.

20748423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 20748423 is about 4555.0436880452. The cubic root of 20748423 is about 274.7862713998.

The spelling of 20748423 in words is "twenty million, seven hundred forty-eight thousand, four hundred twenty-three".