20244430 has 16 divisors (see below), whose sum is σ = 36522000. Its totient is φ = 8079552.

The previous prime is 20244409. The next prime is 20244431. The reversal of 20244430 is 3444202.

It is a junction number, because it is equal to n+sod(n) for n = 20244398 and 20244407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20244431) 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, 2962 + ... + 7018.

It is an arithmetic number, because the mean of its divisors is an integer number (2282625).

Almost surely, 2^20244430 is an apocalyptic number.

20244430 is a deficient number, since it is larger than the sum of its proper divisors (16277570).

20244430 is a wasteful number, since it uses less digits than its factorization.

20244430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4563.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 20244430 is about 4499.3810685471. The cubic root of 20244430 is about 272.5430956166.

Adding to 20244430 its reverse (3444202), we get a palindrome (23688632).

The spelling of 20244430 in words is "twenty million, two hundred forty-four thousand, four hundred thirty".