1328968772 has 6 divisors (see below), whose sum is σ = 2325695358. Its totient is φ = 664484384.

The previous prime is 1328968769. The next prime is 1328968777. The reversal of 1328968772 is 2778698231.

It can be written as a sum of positive squares in only one way, i.e., 1187215936 + 141752836 = 34456^2 + 11906^2 .

It is not an unprimeable number, because it can be changed into a prime (1328968777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166121093 + ... + 166121100.

It is an arithmetic number, because the mean of its divisors is an integer number (387615893).

Almost surely, 2^1328968772 is an apocalyptic number.

It is an amenable number.

1328968772 is a deficient number, since it is larger than the sum of its proper divisors (996726586).

1328968772 is a wasteful number, since it uses less digits than its factorization.

1328968772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332242197 (or 332242195 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 53.

The square root of 1328968772 is about 36455.0239610400. The cubic root of 1328968772 is about 1099.4401481661.

The spelling of 1328968772 in words is "one billion, three hundred twenty-eight million, nine hundred sixty-eight thousand, seven hundred seventy-two".