273255138 has 72 divisors (see below), whose sum is σ = 656061588. Its totient is φ = 81710208.

The previous prime is 273255113. The next prime is 273255149. The reversal of 273255138 is 831552372.

It is a happy number.

273255138 is a `hidden beast` number, since 2 + 73 + 2 + 551 + 38 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 133471809 + 139783329 = 11553^2 + 11823^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 319920 + ... + 320772.

Almost surely, 2^273255138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 273255138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328030794).

273255138 is an abundant number, since it is smaller than the sum of its proper divisors (382806450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

273255138 is a wasteful number, since it uses less digits than its factorization.

273255138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948 (or 908 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 273255138 is about 16530.4306658962. The cubic root of 273255138 is about 648.9174390447.

The spelling of 273255138 in words is "two hundred seventy-three million, two hundred fifty-five thousand, one hundred thirty-eight".