20152873 has 4 divisors (see below), whose sum is σ = 21703108. Its totient is φ = 18602640.

The previous prime is 20152861. The next prime is 20152889. The reversal of 20152873 is 37825102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13741849 + 6411024 = 3707^2 + 2532^2 .

It is a cyclic number.

It is not a de Polignac number, because 20152873 - 2⁵ = 20152841 is a prime.

It is a super-2 number, since 2×20152873² = 812276580308258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20152823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775098 + ... + 775123.

It is an arithmetic number, because the mean of its divisors is an integer number (5425777).

Almost surely, 2^20152873 is an apocalyptic number.

It is an amenable number.

20152873 is a deficient number, since it is larger than the sum of its proper divisors (1550235).

20152873 is a wasteful number, since it uses less digits than its factorization.

20152873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550234.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 20152873 is about 4489.1951394431. The cubic root of 20152873 is about 272.1316089238.

Adding to 20152873 its reverse (37825102), we get a palindrome (57977975).

It can be divided in two parts, 201528 and 73, that added together give a square (201601 = 449²).

The spelling of 20152873 in words is "twenty million, one hundred fifty-two thousand, eight hundred seventy-three".