2028687831830 has 32 divisors (see below), whose sum is σ = 4068362764800. Its totient is φ = 722008820320.

The previous prime is 2028687831829. The next prime is 2028687831869. The reversal of 2028687831830 is 381387868202.

It is a happy number.

It is a super-2 number, since 2×2028687831830² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196192880 + ... + 196203219.

It is an arithmetic number, because the mean of its divisors is an integer number (127136336400).

Almost surely, 2^{2028687831830} is an apocalyptic number.

2028687831830 is an abundant number, since it is smaller than the sum of its proper divisors (2039674932970).

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

2028687831830 is a wasteful number, since it uses less digits than its factorization.

2028687831830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392396164.

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 2028687831830 in words is "two trillion, twenty-eight billion, six hundred eighty-seven million, eight hundred thirty-one thousand, eight hundred thirty".