273881345 has 8 divisors (see below), whose sum is σ = 328769064. Its totient is φ = 219030784.

The previous prime is 273881341. The next prime is 273881347. The reversal of 273881345 is 543188372.

It can be written as a sum of positive squares in 4 ways, for example, as 125260864 + 148620481 = 11192^2 + 12191^2 .

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 273881345 - 2² = 273881341 is a prime.

It is a super-3 number, since 3×273881345³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (273881341) 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, 10937 + ... + 25833.

It is an arithmetic number, because the mean of its divisors is an integer number (41096133).

Almost surely, 2^273881345 is an apocalyptic number.

It is an amenable number.

273881345 is a deficient number, since it is larger than the sum of its proper divisors (54887719).

273881345 is a wasteful number, since it uses less digits than its factorization.

273881345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18579.

The product of its digits is 161280, while the sum is 41.

The square root of 273881345 is about 16549.3608637917. The cubic root of 273881345 is about 649.4127595601.

The spelling of 273881345 in words is "two hundred seventy-three million, eight hundred eighty-one thousand, three hundred forty-five".