1323172772 has 24 divisors (see below), whose sum is σ = 2361211776. Its totient is φ = 648561888.

The previous prime is 1323172733. The next prime is 1323172789. The reversal of 1323172772 is 2772713231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394133 + ... + 397475.

It is an arithmetic number, because the mean of its divisors is an integer number (98383824).

Almost surely, 2^1323172772 is an apocalyptic number.

It is an amenable number.

1323172772 is a deficient number, since it is larger than the sum of its proper divisors (1038039004).

1323172772 is a wasteful number, since it uses less digits than its factorization.

1323172772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5267 (or 5265 counting only the distinct ones).

The product of its digits is 24696, while the sum is 35.

The square root of 1323172772 is about 36375.4418804775. The cubic root of 1323172772 is about 1097.8394981956.

The spelling of 1323172772 in words is "one billion, three hundred twenty-three million, one hundred seventy-two thousand, seven hundred seventy-two".