2028220828 has 24 divisors (see below), whose sum is σ = 3576352752. Its totient is φ = 1006422144.

The previous prime is 2028220807. The next prime is 2028220871. The reversal of 2028220828 is 8280228202.

It is a super-2 number, since 2×2028220828² = 8227359454266011168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2028220793 and 2028220802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728976 + ... + 731752.

It is an arithmetic number, because the mean of its divisors is an integer number (149014698).

Almost surely, 2^2028220828 is an apocalyptic number.

It is an amenable number.

2028220828 is a deficient number, since it is larger than the sum of its proper divisors (1548131924).

2028220828 is a wasteful number, since it uses less digits than its factorization.

2028220828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101 (or 4099 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 2028220828 is about 45035.7727589968. The cubic root of 2028220828 is about 1265.8193961159.

The spelling of 2028220828 in words is "two billion, twenty-eight million, two hundred twenty thousand, eight hundred twenty-eight".