20952423 has 6 divisors (see below), whose sum is σ = 30264624. Its totient is φ = 13968276.

The previous prime is 20952403. The next prime is 20952433. The reversal of 20952423 is 32425902.

It is not a de Polignac number, because 20952423 - 2⁶ = 20952359 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20952403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1164015 + ... + 1164032.

It is an arithmetic number, because the mean of its divisors is an integer number (5044104).

Almost surely, 2^20952423 is an apocalyptic number.

20952423 is a deficient number, since it is larger than the sum of its proper divisors (9312201).

20952423 is a wasteful number, since it uses less digits than its factorization.

20952423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328053 (or 2328050 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20952423 is about 4577.3816751501. The cubic root of 20952423 is about 275.6839087686.

The spelling of 20952423 in words is "twenty million, nine hundred fifty-two thousand, four hundred twenty-three".