20395573 has 12 divisors (see below), whose sum is σ = 22826304. Its totient is φ = 18072800.

The previous prime is 20395559. The next prime is 20395579. The reversal of 20395573 is 37559302.

It is not a de Polignac number, because 20395573 - 2⁵ = 20395541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20395579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17940 + ... + 19042.

It is an arithmetic number, because the mean of its divisors is an integer number (1902192).

Almost surely, 2^20395573 is an apocalyptic number.

It is an amenable number.

20395573 is a deficient number, since it is larger than the sum of its proper divisors (2430731).

20395573 is a wasteful number, since it uses less digits than its factorization.

20395573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 34.

The square root of 20395573 is about 4516.1458125264. The cubic root of 20395573 is about 273.2196749670.

It can be divided in two parts, 20 and 395573, that added together give a palindrome (395593).

The spelling of 20395573 in words is "twenty million, three hundred ninety-five thousand, five hundred seventy-three".