20445230 has 16 divisors (see below), whose sum is σ = 39632544. Its totient is φ = 7548960.

The previous prime is 20445223. The next prime is 20445233. The reversal of 20445230 is 3254402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445233) 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, 78506 + ... + 78765.

It is an arithmetic number, because the mean of its divisors is an integer number (2477034).

Almost surely, 2^20445230 is an apocalyptic number.

20445230 is a deficient number, since it is larger than the sum of its proper divisors (19187314).

20445230 is a wasteful number, since it uses less digits than its factorization.

20445230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157291.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20445230 is about 4521.6401891349. The cubic root of 20445230 is about 273.4412307845.

Adding to 20445230 its reverse (3254402), we get a palindrome (23699632).

The spelling of 20445230 in words is "twenty million, four hundred forty-five thousand, two hundred thirty".