2628920779 has 8 divisors (see below), whose sum is σ = 2695134960. Its totient is φ = 2562806400.

The previous prime is 2628920773. The next prime is 2628920803. The reversal of 2628920779 is 9770298262.

2628920779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2628920779 - 2⁵ = 2628920747 is a prime.

It is a super-2 number, since 2×2628920779² = 13822448924515933682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2628920773) 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, 29892 + ... + 78430.

It is an arithmetic number, because the mean of its divisors is an integer number (336891870).

Almost surely, 2^2628920779 is an apocalyptic number.

2628920779 is a deficient number, since it is larger than the sum of its proper divisors (66214181).

2628920779 is a wasteful number, since it uses less digits than its factorization.

2628920779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49901.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 2628920779 is about 51273.0024379302. The cubic root of 2628920779 is about 1380.1485485613.

The spelling of 2628920779 in words is "two billion, six hundred twenty-eight million, nine hundred twenty thousand, seven hundred seventy-nine".