1320768628 has 12 divisors (see below), whose sum is σ = 2321528832. Its totient is φ = 657474680.

The previous prime is 1320768619. The next prime is 1320768649. The reversal of 1320768628 is 8268670231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 726388 + ... + 728203.

It is an arithmetic number, because the mean of its divisors is an integer number (193460736).

Almost surely, 2^1320768628 is an apocalyptic number.

It is an amenable number.

1320768628 is a deficient number, since it is larger than the sum of its proper divisors (1000760204).

1320768628 is a wasteful number, since it uses less digits than its factorization.

1320768628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454822 (or 1454820 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 1320768628 is about 36342.3806044678. The cubic root of 1320768628 is about 1097.1741871472.

The spelling of 1320768628 in words is "one billion, three hundred twenty million, seven hundred sixty-eight thousand, six hundred twenty-eight".