727105138 has 4 divisors (see below), whose sum is σ = 1090657710. Its totient is φ = 363552568.

The previous prime is 727105109. The next prime is 727105153. The reversal of 727105138 is 831501727.

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., 586753729 + 140351409 = 24223^2 + 11847^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181776283 + ... + 181776286.

Almost surely, 2^727105138 is an apocalyptic number.

727105138 is a deficient number, since it is larger than the sum of its proper divisors (363552572).

727105138 is a wasteful number, since it uses less digits than its factorization.

727105138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363552571.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 727105138 is about 26964.8871312305. The cubic root of 727105138 is about 899.2195448056.

The spelling of 727105138 in words is "seven hundred twenty-seven million, one hundred five thousand, one hundred thirty-eight".