272636138 has 4 divisors (see below), whose sum is σ = 408954210. Its totient is φ = 136318068.

The previous prime is 272636113. The next prime is 272636173. The reversal of 272636138 is 831636272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 218951209 + 53684929 = 14797^2 + 7327^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68159033 + ... + 68159036.

Almost surely, 2^272636138 is an apocalyptic number.

272636138 is a deficient number, since it is larger than the sum of its proper divisors (136318072).

272636138 is a wasteful number, since it uses less digits than its factorization.

272636138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136318071.

The product of its digits is 72576, while the sum is 38.

The square root of 272636138 is about 16511.6970054565. The cubic root of 272636138 is about 648.4270748792.

The spelling of 272636138 in words is "two hundred seventy-two million, six hundred thirty-six thousand, one hundred thirty-eight".