1320266828 has 6 divisors (see below), whose sum is σ = 2310466956. Its totient is φ = 660133412.

The previous prime is 1320266821. The next prime is 1320266833. The reversal of 1320266828 is 8286620231.

It is a junction number, because it is equal to n+sod(n) for n = 1320266791 and 1320266800.

It is not an unprimeable number, because it can be changed into a prime (1320266821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165033350 + ... + 165033357.

It is an arithmetic number, because the mean of its divisors is an integer number (385077826).

Almost surely, 2^1320266828 is an apocalyptic number.

It is an amenable number.

1320266828 is a deficient number, since it is larger than the sum of its proper divisors (990200128).

1320266828 is a wasteful number, since it uses less digits than its factorization.

1320266828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330066711 (or 330066709 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 1320266828 is about 36335.4761631109. The cubic root of 1320266828 is about 1097.0352196462.

The spelling of 1320266828 in words is "one billion, three hundred twenty million, two hundred sixty-six thousand, eight hundred twenty-eight".