1327069728 has 36 divisors (see below), whose sum is σ = 3773855358. Its totient is φ = 442356480.

The previous prime is 1327069721. The next prime is 1327069739. The reversal of 1327069728 is 8279607231.

It can be written as a sum of positive squares in only one way, i.e., 906491664 + 420578064 = 30108^2 + 20508^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1327069728² = 3522228125947987968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1327069721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2303653 + ... + 2304228.

Almost surely, 2^1327069728 is an apocalyptic number.

1327069728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1327069728 is an abundant number, since it is smaller than the sum of its proper divisors (2446785630).

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

1327069728 is a wasteful number, since it uses less digits than its factorization.

1327069728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4607897 (or 4607886 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 1327069728 is about 36428.9682533008. The cubic root of 1327069728 is about 1098.9162129785.

The spelling of 1327069728 in words is "one billion, three hundred twenty-seven million, sixty-nine thousand, seven hundred twenty-eight".