1280263 has 8 divisors (see below), whose sum is σ = 1338480. Its totient is φ = 1223040.

The previous prime is 1280231. The next prime is 1280267. The reversal of 1280263 is 3620821.

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

It is a cyclic number.

It is not a de Polignac number, because 1280263 - 2⁵ = 1280231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3631 + ... + 3967.

It is an arithmetic number, because the mean of its divisors is an integer number (167310).

2^1280263 is an apocalyptic number.

1280263 is a deficient number, since it is larger than the sum of its proper divisors (58217).

1280263 is a wasteful number, since it uses less digits than its factorization.

1280263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1280263 is about 1131.4870746058. The cubic root of 1280263 is about 108.5841405278.

The spelling of 1280263 in words is "one million, two hundred eighty thousand, two hundred sixty-three".