20844283900 has 36 divisors (see below), whose sum is σ = 49344107400. Its totient is φ = 7579739200.

The previous prime is 20844283879. The next prime is 20844283909. The reversal of 20844283900 is 938244802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20844283909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9473575 + ... + 9475774.

It is an arithmetic number, because the mean of its divisors is an integer number (1370669650).

Almost surely, 2^20844283900 is an apocalyptic number.

20844283900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20844283900 is an abundant number, since it is smaller than the sum of its proper divisors (28499823500).

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

20844283900 is a wasteful number, since it uses less digits than its factorization.

20844283900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18949374 (or 18949367 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 20844283900 in words is "twenty billion, eight hundred forty-four million, two hundred eighty-three thousand, nine hundred".