2028830691 has 8 divisors (see below), whose sum is σ = 2798387280. Its totient is φ = 1305913952.

The previous prime is 2028830689. The next prime is 2028830693. The reversal of 2028830691 is 1960388202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2028830689) and next prime (2028830693).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2028830691 - 2¹ = 2028830689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2028830693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11659860 + ... + 11660033.

It is an arithmetic number, because the mean of its divisors is an integer number (349798410).

Almost surely, 2^2028830691 is an apocalyptic number.

2028830691 is a deficient number, since it is larger than the sum of its proper divisors (769556589).

2028830691 is a wasteful number, since it uses less digits than its factorization.

2028830691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23319925.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 2028830691 is about 45042.5431231408. The cubic root of 2028830691 is about 1265.9462559138.

The spelling of 2028830691 in words is "two billion, twenty-eight million, eight hundred thirty thousand, six hundred ninety-one".