1328458572 has 72 divisors (see below), whose sum is σ = 3919458816. Its totient is φ = 371480544.

The previous prime is 1328458561. The next prime is 1328458577. The reversal of 1328458572 is 2758548231.

1328458572 is a `hidden beast` number, since 1 + 3 + 28 + 4 + 58 + 572 = 666.

It is a super-3 number, since 3×1328458572³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1328458577) 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 23 ways as a sum of consecutive naturals, for example, 44238 + ... + 67925.

It is an arithmetic number, because the mean of its divisors is an integer number (54436928).

Almost surely, 2^1328458572 is an apocalyptic number.

1328458572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1328458572 is an abundant number, since it is smaller than the sum of its proper divisors (2591000244).

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

1328458572 is a wasteful number, since it uses less digits than its factorization.

1328458572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112227 (or 112222 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 1328458572 is about 36448.0256255397. The cubic root of 1328458572 is about 1099.2994360158.

The spelling of 1328458572 in words is "one billion, three hundred twenty-eight million, four hundred fifty-eight thousand, five hundred seventy-two".