281398 has 16 divisors (see below), whose sum is σ = 463680. Its totient is φ = 127296.

The previous prime is 281381. The next prime is 281419. The reversal of 281398 is 893182.

It is a congruent number.

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, 1986 + ... + 2122.

It is an arithmetic number, because the mean of its divisors is an integer number (28980).

2²⁸¹³⁹⁸ is an apocalyptic number.

281398 is a deficient number, since it is larger than the sum of its proper divisors (182282).

281398 is a wasteful number, since it uses less digits than its factorization.

281398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231.

The product of its digits is 3456, while the sum is 31.

The square root of 281398 is about 530.4696032762. The cubic root of 281398 is about 65.5300252763.

The spelling of 281398 in words is "two hundred eighty-one thousand, three hundred ninety-eight".