1280763 has 24 divisors (see below), whose sum is σ = 2139696. Its totient is φ = 729600.

The previous prime is 1280761. The next prime is 1280767. The reversal of 1280763 is 3670821.

It is not a de Polignac number, because 1280763 - 2¹ = 1280761 is a prime.

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 d-powerful number, because it can be written as 1 + 2⁷ + 8 + 0 + 7⁷ + 6⁷ + 3¹¹ .

It is not an unprimeable number, because it can be changed into a prime (1280761) by changing a digit.

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, 1303 + ... + 2063.

It is an arithmetic number, because the mean of its divisors is an integer number (89154).

2^1280763 is an apocalyptic number.

1280763 is a deficient number, since it is larger than the sum of its proper divisors (858933).

1280763 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 1280763 = (2361780)₉.

1280763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795 (or 792 counting only the distinct ones).

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

The square root of 1280763 is about 1131.7080012088. The cubic root of 1280763 is about 108.5982743435.

The spelling of 1280763 in words is "one million, two hundred eighty thousand, seven hundred sixty-three".