2028820730 has 32 divisors (see below), whose sum is σ = 3773357568. Its totient is φ = 784584000.

The previous prime is 2028820697. The next prime is 2028820733. The reversal of 2028820730 is 370288202.

It is a super-2 number, since 2×2028820730² = 8232227108955465800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2028820733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395180 + ... + 400280.

It is an arithmetic number, because the mean of its divisors is an integer number (117917424).

Almost surely, 2^2028820730 is an apocalyptic number.

2028820730 is a deficient number, since it is larger than the sum of its proper divisors (1744536838).

2028820730 is a wasteful number, since it uses less digits than its factorization.

2028820730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6422.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 2028820730 is about 45042.4325497636. The cubic root of 2028820730 is about 1265.9441840945.

The spelling of 2028820730 in words is "two billion, twenty-eight million, eight hundred twenty thousand, seven hundred thirty".