1276380 has 72 divisors (see below), whose sum is σ = 4429152. Its totient is φ = 291456.

The previous prime is 1276361. The next prime is 1276397. The reversal of 1276380 is 836721.

1276380 is a `hidden beast` number, since 1 + 27 + 638 + 0 = 666.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 754 + ... + 1766.

It is an arithmetic number, because the mean of its divisors is an integer number (61516).

2^1276380 is an apocalyptic number.

1276380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1276380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2214576).

1276380 is an abundant number, since it is smaller than the sum of its proper divisors (3152772).

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

1276380 is a wasteful number, since it uses less digits than its factorization.

1276380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1276380 is about 1129.7698880746. The cubic root of 1276380 is about 108.4742518556.

The spelling of 1276380 in words is "one million, two hundred seventy-six thousand, three hundred eighty".