281098 has 4 divisors (see below), whose sum is σ = 421650. Its totient is φ = 140548.

The previous prime is 281081. The next prime is 281117. The reversal of 281098 is 890182.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 890182 = 2 ⋅445091.

It can be written as a sum of positive squares in only one way, i.e., 273529 + 7569 = 523^2 + 87^2 .

It is a super-3 number, since 3×281098³ = 66633790893339576, which contains 333 as substring.

It is an unprimeable number.

281098 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70273 + ... + 70276.

2²⁸¹⁰⁹⁸ is an apocalyptic number.

281098 is a deficient number, since it is larger than the sum of its proper divisors (140552).

281098 is a wasteful number, since it uses less digits than its factorization.

281098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140551.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 281098 is about 530.1867595480. The cubic root of 281098 is about 65.5067296856.

The spelling of 281098 in words is "two hundred eighty-one thousand, ninety-eight".