2028567821284 has 81 divisors (see below), whose sum is σ = 3854472364827. Its totient is φ = 934007329728.

The previous prime is 2028567821279. The next prime is 2028567821299. The reversal of 2028567821284 is 4821287658202.

The square root of 2028567821284 is 1424278.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 161300230884 + 1867267590400 = 401622^2 + 1366480^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2002534362 + ... + 2002535374.

Almost surely, 2^{2028567821284} is an apocalyptic number.

2028567821284 is the 1424278-th square number.

It is an amenable number.

2028567821284 is a deficient number, since it is larger than the sum of its proper divisors (1825904543543).

2028567821284 is an equidigital number, since it uses as much as digits as its factorization.

2028567821284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 55.

The spelling of 2028567821284 in words is "two trillion, twenty-eight billion, five hundred sixty-seven million, eight hundred twenty-one thousand, two hundred eighty-four".