281283264 has 42 divisors (see below), whose sum is σ = 806249340. Its totient is φ = 93760896.

The previous prime is 281283257. The next prime is 281283271. The reversal of 281283264 is 462382182.

It is an interprime number because it is at equal distance from previous prime (281283257) and next prime (281283271).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 243594 + ... + 244745.

Almost surely, 2^281283264 is an apocalyptic number.

281283264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

281283264 is an abundant number, since it is smaller than the sum of its proper divisors (524966076).

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

281283264 is a wasteful number, since it uses less digits than its factorization.

281283264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488357 (or 488344 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 281283264 is about 16771.5015427957. The cubic root of 281283264 is about 655.2111775611.

The spelling of 281283264 in words is "two hundred eighty-one million, two hundred eighty-three thousand, two hundred sixty-four".