1332972728 has 32 divisors (see below), whose sum is σ = 2611785600. Its totient is φ = 636581088.

The previous prime is 1332972727. The next prime is 1332972743. The reversal of 1332972728 is 8272792331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1332972727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131075 + ... + 140877.

It is an arithmetic number, because the mean of its divisors is an integer number (81618300).

Almost surely, 2^1332972728 is an apocalyptic number.

It is an amenable number.

1332972728 is a deficient number, since it is larger than the sum of its proper divisors (1278812872).

1332972728 is a wasteful number, since it uses less digits than its factorization.

1332972728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10571 (or 10567 counting only the distinct ones).

The product of its digits is 254016, while the sum is 44.

The square root of 1332972728 is about 36509.8990412189. The cubic root of 1332972728 is about 1100.5431829703.

The spelling of 1332972728 in words is "one billion, three hundred thirty-two million, nine hundred seventy-two thousand, seven hundred twenty-eight".