20887542200 has 96 divisors (see below), whose sum is σ = 55575862560. Its totient is φ = 7151808000.

The previous prime is 20887542191. The next prime is 20887542211. The reversal of 20887542200 is 224578802.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1072550 + ... + 1091850.

It is an arithmetic number, because the mean of its divisors is an integer number (578915235).

Almost surely, 2^20887542200 is an apocalyptic number.

20887542200 is a gapful number since it is divisible by the number (20) 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 20887542200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27787931280).

20887542200 is an abundant number, since it is smaller than the sum of its proper divisors (34688320360).

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

20887542200 is a wasteful number, since it uses less digits than its factorization.

20887542200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20097 (or 20088 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The spelling of 20887542200 in words is "twenty billion, eight hundred eighty-seven million, five hundred forty-two thousand, two hundred".