2705281 has 8 divisors (see below), whose sum is σ = 2765664. Its totient is φ = 2645760.

The previous prime is 2705257. The next prime is 2705291. The reversal of 2705281 is 1825072.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2705281 - 2⁵ = 2705249 is a prime.

It is a super-2 number, since 2×2705281² = 14637090577922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2705251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13921 + ... + 14113.

It is an arithmetic number, because the mean of its divisors is an integer number (345708).

2^2705281 is an apocalyptic number.

It is an amenable number.

2705281 is a deficient number, since it is larger than the sum of its proper divisors (60383).

2705281 is a wasteful number, since it uses less digits than its factorization.

2705281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 2705281 is about 1644.7738446364. The cubic root of 2705281 is about 139.3383919217.

The spelling of 2705281 in words is "two million, seven hundred five thousand, two hundred eighty-one".