20032273 has 4 divisors (see below), whose sum is σ = 21210660. Its totient is φ = 18853888.

The previous prime is 20032261. The next prime is 20032279. The reversal of 20032273 is 37223002.

It is a happy number.

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 16257024 + 3775249 = 4032^2 + 1943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20032273 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 20032273.

It is not an unprimeable number, because it can be changed into a prime (20032279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589168 + ... + 589201.

It is an arithmetic number, because the mean of its divisors is an integer number (5302665).

Almost surely, 2^20032273 is an apocalyptic number.

It is an amenable number.

20032273 is a deficient number, since it is larger than the sum of its proper divisors (1178387).

20032273 is a wasteful number, since it uses less digits than its factorization.

20032273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178386.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 20032273 is about 4475.7427316592. The cubic root of 20032273 is about 271.5876871963.

Adding to 20032273 its reverse (37223002), we get a palindrome (57255275).

The spelling of 20032273 in words is "twenty million, thirty-two thousand, two hundred seventy-three".