1280238 has 16 divisors (see below), whose sum is σ = 2643456. Its totient is φ = 412920.

The previous prime is 1280231. The next prime is 1280267. The reversal of 1280238 is 8320821.

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280231) 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, 3256 + ... + 3627.

It is an arithmetic number, because the mean of its divisors is an integer number (165216).

2^1280238 is an apocalyptic number.

1280238 is an abundant number, since it is smaller than the sum of its proper divisors (1363218).

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

1280238 is a wasteful number, since it uses less digits than its factorization.

1280238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6919.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1280238 is about 1131.4760271433. The cubic root of 1280238 is about 108.5834337404.

The spelling of 1280238 in words is "one million, two hundred eighty thousand, two hundred thirty-eight".