2028831428 has 12 divisors (see below), whose sum is σ = 3823567020. Its totient is φ = 936383712.

The previous prime is 2028831421. The next prime is 2028831437. The reversal of 2028831428 is 8241388202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 402483844 + 1626347584 = 20062^2 + 40328^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2028831391 and 2028831400.

It is not an unprimeable number, because it can be changed into a prime (2028831421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19507943 + ... + 19508046.

It is an arithmetic number, because the mean of its divisors is an integer number (318630585).

Almost surely, 2^2028831428 is an apocalyptic number.

It is an amenable number.

2028831428 is a deficient number, since it is larger than the sum of its proper divisors (1794735592).

2028831428 is a wasteful number, since it uses less digits than its factorization.

2028831428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39016006 (or 39016004 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 2028831428 is about 45042.5513042945. The cubic root of 2028831428 is about 1265.9464092044.

The spelling of 2028831428 in words is "two billion, twenty-eight million, eight hundred thirty-one thousand, four hundred twenty-eight".