20354844 has 12 divisors (see below), whose sum is σ = 47494664. Its totient is φ = 6784944.

The previous prime is 20354843. The next prime is 20354849. The reversal of 20354844 is 44845302.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354843) 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 in 3 ways as a sum of consecutive naturals, for example, 848107 + ... + 848130.

Almost surely, 2^20354844 is an apocalyptic number.

It is an amenable number.

20354844 is an abundant number, since it is smaller than the sum of its proper divisors (27139820).

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

20354844 is a wasteful number, since it uses less digits than its factorization.

20354844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696244 (or 1696242 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 20354844 is about 4511.6342936900. The cubic root of 20354844 is about 273.0376848245.

The spelling of 20354844 in words is "twenty million, three hundred fifty-four thousand, eight hundred forty-four".