20245430 has 16 divisors (see below), whose sum is σ = 36493200. Its totient is φ = 8086752.

The previous prime is 20245411. The next prime is 20245439. The reversal of 20245430 is 3454202.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245439) 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, 12296 + ... + 13844.

It is an arithmetic number, because the mean of its divisors is an integer number (2280825).

Almost surely, 2^20245430 is an apocalyptic number.

20245430 is a deficient number, since it is larger than the sum of its proper divisors (16247770).

20245430 is a wasteful number, since it uses less digits than its factorization.

20245430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2863.

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

The square root of 20245430 is about 4499.4921935703. The cubic root of 20245430 is about 272.5475830831.

Adding to 20245430 its reverse (3454202), we get a palindrome (23699632).

The spelling of 20245430 in words is "twenty million, two hundred forty-five thousand, four hundred thirty".