1327820028 has 12 divisors (see below), whose sum is σ = 3098246760. Its totient is φ = 442606672.

The previous prime is 1327820027. The next prime is 1327820041. The reversal of 1327820028 is 8200287231.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1327820023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55325823 + ... + 55325846.

It is an arithmetic number, because the mean of its divisors is an integer number (258187230).

Almost surely, 2^1327820028 is an apocalyptic number.

It is an amenable number.

1327820028 is an abundant number, since it is smaller than the sum of its proper divisors (1770426732).

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

1327820028 is a wasteful number, since it uses less digits than its factorization.

1327820028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110651676 (or 110651674 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 1327820028 is about 36439.2649212357. The cubic root of 1327820028 is about 1099.1232760733.

The spelling of 1327820028 in words is "one billion, three hundred twenty-seven million, eight hundred twenty thousand, twenty-eight".