20244345 has 16 divisors (see below), whose sum is σ = 35335872. Its totient is φ = 9815360.

The previous prime is 20244337. The next prime is 20244361. The reversal of 20244345 is 54344202.

It is not a de Polignac number, because 20244345 - 2³ = 20244337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61182 + ... + 61511.

It is an arithmetic number, because the mean of its divisors is an integer number (2208492).

Almost surely, 2^20244345 is an apocalyptic number.

It is an amenable number.

20244345 is a deficient number, since it is larger than the sum of its proper divisors (15091527).

20244345 is a wasteful number, since it uses less digits than its factorization.

20244345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122712.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 20244345 is about 4499.3716227936. The cubic root of 20244345 is about 272.5427141751.

Adding to 20244345 its reverse (54344202), we get a palindrome (74588547).

The spelling of 20244345 in words is "twenty million, two hundred forty-four thousand, three hundred forty-five".