1280826 has 16 divisors (see below), whose sum is σ = 2846400. Its totient is φ = 426924.

The previous prime is 1280821. The next prime is 1280833. The reversal of 1280826 is 6280821.

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

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1280826.

It is not an unprimeable number, because it can be changed into a prime (1280821) 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 7 ways as a sum of consecutive naturals, for example, 11806 + ... + 11913.

It is an arithmetic number, because the mean of its divisors is an integer number (177900).

2^1280826 is an apocalyptic number.

1280826 is an abundant number, since it is smaller than the sum of its proper divisors (1565574).

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

1280826 is a wasteful number, since it uses less digits than its factorization.

1280826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23730 (or 23724 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1280826 is about 1131.7358349014. The cubic root of 1280826 is about 108.6000549433.

The spelling of 1280826 in words is "one million, two hundred eighty thousand, eight hundred twenty-six".