20884535244 has 18 divisors (see below), whose sum is σ = 52791464180. Its totient is φ = 6961511736.

The previous prime is 20884535213. The next prime is 20884535249. The reversal of 20884535244 is 44253548802.

20884535244 is a `hidden beast` number, since 2 + 0 + 88 + 45 + 3 + 524 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 20884535244.

It is not an unprimeable number, because it can be changed into a prime (20884535249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 290062954 + ... + 290063025.

Almost surely, 2^20884535244 is an apocalyptic number.

It is an amenable number.

20884535244 is an abundant number, since it is smaller than the sum of its proper divisors (31906928936).

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

20884535244 is a wasteful number, since it uses less digits than its factorization.

20884535244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580125989 (or 580125984 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 45.

The spelling of 20884535244 in words is "twenty billion, eight hundred eighty-four million, five hundred thirty-five thousand, two hundred forty-four".