20449896 has 16 divisors (see below), whose sum is σ = 51124800. Its totient is φ = 6816624.

The previous prime is 20449889. The next prime is 20449907. The reversal of 20449896 is 69894402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426016 + ... + 426063.

It is an arithmetic number, because the mean of its divisors is an integer number (3195300).

Almost surely, 2^20449896 is an apocalyptic number.

It is an amenable number.

20449896 is an abundant number, since it is smaller than the sum of its proper divisors (30674904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20449896 is a wasteful number, since it uses less digits than its factorization.

20449896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852088 (or 852084 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 20449896 is about 4522.1561229131. The cubic root of 20449896 is about 273.4620307418.

The spelling of 20449896 in words is "twenty million, four hundred forty-nine thousand, eight hundred ninety-six".