20448365 has 16 divisors (see below), whose sum is σ = 29693952. Its totient is φ = 13196544.

The previous prime is 20448361. The next prime is 20448377. The reversal of 20448365 is 56384402.

It is a cyclic number.

It is not a de Polignac number, because 20448365 - 2² = 20448361 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20448361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16589 + ... + 17778.

It is an arithmetic number, because the mean of its divisors is an integer number (1855872).

Almost surely, 2^20448365 is an apocalyptic number.

It is an amenable number.

20448365 is a deficient number, since it is larger than the sum of its proper divisors (9245587).

20448365 is a wasteful number, since it uses less digits than its factorization.

20448365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34396.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 20448365 is about 4521.9868420861. The cubic root of 20448365 is about 273.4552062439.

The spelling of 20448365 in words is "twenty million, four hundred forty-eight thousand, three hundred sixty-five".