1277328 has 80 divisors (see below), whose sum is σ = 3749760. Its totient is φ = 371712.

The previous prime is 1277323. The next prime is 1277357. The reversal of 1277328 is 8237721.

It is a junction number, because it is equal to n+sod(n) for n = 1277295 and 1277304.

It is not an unprimeable number, because it can be changed into a prime (1277321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14308 + ... + 14396.

It is an arithmetic number, because the mean of its divisors is an integer number (46872).

2^1277328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1277328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1874880).

1277328 is an abundant number, since it is smaller than the sum of its proper divisors (2472432).

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

1277328 is a wasteful number, since it uses less digits than its factorization.

1277328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 130 counting only the distinct ones).

The product of its digits is 4704, while the sum is 30.

The square root of 1277328 is about 1130.1893646642. The cubic root of 1277328 is about 108.5011007413.

The spelling of 1277328 in words is "one million, two hundred seventy-seven thousand, three hundred twenty-eight".