20988892224 has 168 divisors, whose sum is σ = 61345084320. Its totient is φ = 6859241472.

The previous prime is 20988892219. The next prime is 20988892231. The reversal of 20988892224 is 42229888902.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19132444 + ... + 19133540.

Almost surely, 2^20988892224 is an apocalyptic number.

20988892224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20988892224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30672542160).

20988892224 is an abundant number, since it is smaller than the sum of its proper divisors (40356192096).

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

20988892224 is a wasteful number, since it uses less digits than its factorization.

20988892224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737 (or 1724 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 20988892224 in words is "twenty billion, nine hundred eighty-eight million, eight hundred ninety-two thousand, two hundred twenty-four".