281089082 has 16 divisors (see below), whose sum is σ = 426179880. Its totient is φ = 139034112.

The previous prime is 281089079. The next prime is 281089117. The reversal of 281089082 is 280980182.

Added to its reverse (280980182) it gives a square (562069264 = 23708²).

It can be written as a sum of positive squares in 4 ways, for example, as 173738761 + 107350321 = 13181^2 + 10361^2 .

281089082 is a rare number.

It is a super-2 number, since 2×281089082² = 158022144039205448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173894 + ... + 175502.

Almost surely, 2^281089082 is an apocalyptic number.

281089082 is a deficient number, since it is larger than the sum of its proper divisors (145090798).

281089082 is a wasteful number, since it uses less digits than its factorization.

281089082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 281089082 is about 16765.7114969810. The cubic root of 281089082 is about 655.0603693168.

Adding to 281089082 its reverse (280980182), we get a square (562069264 = 23708²).

Subtracting from 281089082 its reverse (280980182), we obtain a square (108900 = 330²).

The spelling of 281089082 in words is "two hundred eighty-one million, eighty-nine thousand, eighty-two".