2028696909 has 8 divisors (see below), whose sum is σ = 2705236512. Its totient is φ = 1352310960.

The previous prime is 2028696881. The next prime is 2028696941. The reversal of 2028696909 is 9096968202.

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

It is not a de Polignac number, because 2028696909 - 2²⁰ = 2027648333 is a prime.

It is a super-2 number, since 2×2028696909² = 8231222297172308562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028696949) 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 7 ways as a sum of consecutive naturals, for example, 2919 + ... + 63764.

It is an arithmetic number, because the mean of its divisors is an integer number (338154564).

Almost surely, 2^2028696909 is an apocalyptic number.

It is an amenable number.

2028696909 is a deficient number, since it is larger than the sum of its proper divisors (676539603).

2028696909 is a wasteful number, since it uses less digits than its factorization.

2028696909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76827.

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 2028696909 is about 45041.0580359742. The cubic root of 2028696909 is about 1265.9184296153.

The spelling of 2028696909 in words is "two billion, twenty-eight million, six hundred ninety-six thousand, nine hundred nine".