20475023 has 8 divisors (see below), whose sum is σ = 21240480. Its totient is φ = 19720800.

The previous prime is 20475019. The next prime is 20475041. The reversal of 20475023 is 32057402.

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 20475023 - 2² = 20475019 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 20475023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20475043) 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, 998 + ... + 6476.

It is an arithmetic number, because the mean of its divisors is an integer number (2655060).

Almost surely, 2^20475023 is an apocalyptic number.

20475023 is a deficient number, since it is larger than the sum of its proper divisors (765457).

20475023 is a wasteful number, since it uses less digits than its factorization.

20475023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5617.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 20475023 is about 4524.9334801740. The cubic root of 20475023 is about 273.5739867813.

The spelling of 20475023 in words is "twenty million, four hundred seventy-five thousand, twenty-three".