1028680345 has 32 divisors (see below), whose sum is σ = 1553458176. Its totient is φ = 635236800.

The previous prime is 1028680297. The next prime is 1028680363. The reversal of 1028680345 is 5430868201.

It is a happy number.

1028680345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1028680345 - 2⁹ = 1028679833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28710 + ... + 53680.

It is an arithmetic number, because the mean of its divisors is an integer number (48545568).

Almost surely, 2^1028680345 is an apocalyptic number.

It is an amenable number.

1028680345 is a deficient number, since it is larger than the sum of its proper divisors (524777831).

1028680345 is a wasteful number, since it uses less digits than its factorization.

1028680345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25101.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 1028680345 is about 32073.0470177063. The cubic root of 1028680345 is about 1009.4701481873.

The spelling of 1028680345 in words is "one billion, twenty-eight million, six hundred eighty thousand, three hundred forty-five".