1328774472 has 24 divisors (see below), whose sum is σ = 3598764390. Its totient is φ = 442924800.

The previous prime is 1328774437. The next prime is 1328774497. The reversal of 1328774472 is 2744778231.

1328774472 is a `hidden beast` number, since 1 + 32 + 87 + 74 + 472 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1326853476 + 1920996 = 36426^2 + 1386^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 9227529 + ... + 9227672.

Almost surely, 2^1328774472 is an apocalyptic number.

1328774472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1328774472 is an abundant number, since it is smaller than the sum of its proper divisors (2269989918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1328774472 is a wasteful number, since it uses less digits than its factorization.

1328774472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18455213 (or 18455206 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 1328774472 is about 36452.3589360140. The cubic root of 1328774472 is about 1099.3865648573.

The spelling of 1328774472 in words is "one billion, three hundred twenty-eight million, seven hundred seventy-four thousand, four hundred seventy-two".