20340448 has 12 divisors (see below), whose sum is σ = 40045320. Its totient is φ = 10170208.

The previous prime is 20340443. The next prime is 20340451. The reversal of 20340448 is 84404302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317788 + ... + 317851.

It is an arithmetic number, because the mean of its divisors is an integer number (3337110).

Almost surely, 2^20340448 is an apocalyptic number.

It is an amenable number.

20340448 is a deficient number, since it is larger than the sum of its proper divisors (19704872).

20340448 is an equidigital number, since it uses as much as digits as its factorization.

20340448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635649 (or 635641 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 20340448 is about 4510.0385807662. The cubic root of 20340448 is about 272.9733008458.

The spelling of 20340448 in words is "twenty million, three hundred forty thousand, four hundred forty-eight".