281225826 has 96 divisors (see below), whose sum is σ = 721319040. Its totient is φ = 77511168.

The previous prime is 281225797. The next prime is 281225839. The reversal of 281225826 is 628522182.

281225826 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 834330 + ... + 834666.

It is an arithmetic number, because the mean of its divisors is an integer number (7513740).

Almost surely, 2^281225826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281225826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360659520).

281225826 is an abundant number, since it is smaller than the sum of its proper divisors (440093214).

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

281225826 is a wasteful number, since it uses less digits than its factorization.

281225826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 565 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 281225826 is about 16769.7890863302. The cubic root of 281225826 is about 655.1665765174.

The spelling of 281225826 in words is "two hundred eighty-one million, two hundred twenty-five thousand, eight hundred twenty-six".