20828570080 has 48 divisors (see below), whose sum is σ = 49314412224. Its totient is φ = 8313326080.

The previous prime is 20828570033. The next prime is 20828570123. The reversal of 20828570080 is 8007582802.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67432 + ... + 214951.

It is an arithmetic number, because the mean of its divisors is an integer number (1027383588).

Almost surely, 2^20828570080 is an apocalyptic number.

20828570080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20828570080 is an abundant number, since it is smaller than the sum of its proper divisors (28485842144).

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

20828570080 is a wasteful number, since it uses less digits than its factorization.

20828570080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282859 (or 282851 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The spelling of 20828570080 in words is "twenty billion, eight hundred twenty-eight million, five hundred seventy thousand, eighty".