273138388 has 12 divisors (see below), whose sum is σ = 506109492. Its totient is φ = 128535680.

The previous prime is 273138379. The next prime is 273138401. The reversal of 273138388 is 883831372.

It can be written as a sum of positive squares in 2 ways, for example, as 182736324 + 90402064 = 13518^2 + 9508^2 .

It is a super-3 number, since 3×273138388³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2008303 + ... + 2008438.

It is an arithmetic number, because the mean of its divisors is an integer number (42175791).

Almost surely, 2^273138388 is an apocalyptic number.

It is an amenable number.

273138388 is a deficient number, since it is larger than the sum of its proper divisors (232971104).

273138388 is a wasteful number, since it uses less digits than its factorization.

273138388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016762 (or 4016760 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 273138388 is about 16526.8989226654. The cubic root of 273138388 is about 648.8250078417.

The spelling of 273138388 in words is "two hundred seventy-three million, one hundred thirty-eight thousand, three hundred eighty-eight".