20328987852 has 48 divisors (see below), whose sum is σ = 53990277600. Its totient is φ = 6611051520.

The previous prime is 20328987839. The next prime is 20328987853. The reversal of 20328987852 is 25878982302.

It is a happy number.

20328987852 is a `hidden beast` number, since 203 + 289 + 87 + 85 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (20328987853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2291077 + ... + 2299932.

It is an arithmetic number, because the mean of its divisors is an integer number (1124797450).

Almost surely, 2^20328987852 is an apocalyptic number.

It is an amenable number.

20328987852 is an abundant number, since it is smaller than the sum of its proper divisors (33661289748).

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

20328987852 is a wasteful number, since it uses less digits than its factorization.

20328987852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4591063 (or 4591055 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 20328987852 in words is "twenty billion, three hundred twenty-eight million, nine hundred eighty-seven thousand, eight hundred fifty-two".