281264 has 10 divisors (see below), whose sum is σ = 544980. Its totient is φ = 140624.

The previous prime is 281251. The next prime is 281273. The reversal of 281264 is 462182.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281264.

It is an unprimeable number.

281264 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8774 + ... + 8805.

It is an arithmetic number, because the mean of its divisors is an integer number (54498).

2²⁸¹²⁶⁴ is an apocalyptic number.

It is an amenable number.

281264 is a deficient number, since it is larger than the sum of its proper divisors (263716).

281264 is a wasteful number, since it uses less digits than its factorization.

281264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17587 (or 17581 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 281264 is about 530.3432850522. The cubic root of 281264 is about 65.5196219595.

It can be divided in two parts, 281 and 264, that added together give a palindrome (545).

The spelling of 281264 in words is "two hundred eighty-one thousand, two hundred sixty-four".