20574923 has 8 divisors (see below), whose sum is σ = 21332592. Its totient is φ = 19827936.

The previous prime is 20574899. The next prime is 20574959. The reversal of 20574923 is 32947502.

It is a happy number.

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 20574923 - 2¹⁸ = 20312779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20574923.

It is not an unprimeable number, because it can be changed into a prime (20574973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1361 + ... + 6557.

It is an arithmetic number, because the mean of its divisors is an integer number (2666574).

Almost surely, 2^20574923 is an apocalyptic number.

20574923 is a deficient number, since it is larger than the sum of its proper divisors (757669).

20574923 is a wasteful number, since it uses less digits than its factorization.

20574923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5341.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 20574923 is about 4535.9588842934. The cubic root of 20574923 is about 274.0181981271.

The spelling of 20574923 in words is "twenty million, five hundred seventy-four thousand, nine hundred twenty-three".