270781281 has 12 divisors (see below), whose sum is σ = 401700052. Its totient is φ = 175641696.

The previous prime is 270781271. The next prime is 270781289. The reversal of 270781281 is 182187072.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 121550625 + 149230656 = 11025^2 + 12216^2 .

It is not a de Polignac number, because 270781281 - 2¹¹ = 270779233 is a prime.

It is a super-2 number, since 2×270781281² = 146645004280001922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (270781289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406246 + ... + 406911.

Almost surely, 2^270781281 is an apocalyptic number.

It is an amenable number.

270781281 is a deficient number, since it is larger than the sum of its proper divisors (130918771).

270781281 is a wasteful number, since it uses less digits than its factorization.

270781281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813200 (or 813197 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 270781281 is about 16455.4331757022. The cubic root of 270781281 is about 646.9532210668.

The spelling of 270781281 in words is "two hundred seventy million, seven hundred eighty-one thousand, two hundred eighty-one".