1272828218 has 8 divisors (see below), whose sum is σ = 1936133280. Its totient is φ = 627450460.

The previous prime is 1272828217. The next prime is 1272828281. The reversal of 1272828218 is 8128282721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1272828217) 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, 4481648 + ... + 4481931.

It is an arithmetic number, because the mean of its divisors is an integer number (242016660).

Almost surely, 2^1272828218 is an apocalyptic number.

1272828218 is a deficient number, since it is larger than the sum of its proper divisors (663305062).

1272828218 is an equidigital number, since it uses as much as digits as its factorization.

1272828218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8963652.

The product of its digits is 57344, while the sum is 41.

The square root of 1272828218 is about 35676.7181506371. The cubic root of 1272828218 is about 1083.7354129954.

The spelling of 1272828218 in words is "one billion, two hundred seventy-two million, eight hundred twenty-eight thousand, two hundred eighteen".