727750138 has 8 divisors (see below), whose sum is σ = 1091900160. Its totient is φ = 363783420.

The previous prime is 727750091. The next prime is 727750159. The reversal of 727750138 is 831057727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 727750138.

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, 35428 + ... + 52063.

It is an arithmetic number, because the mean of its divisors is an integer number (136487520).

Almost surely, 2^727750138 is an apocalyptic number.

727750138 is a deficient number, since it is larger than the sum of its proper divisors (364150022).

727750138 is a wasteful number, since it uses less digits than its factorization.

727750138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91652.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 727750138 is about 26976.8444781817. The cubic root of 727750138 is about 899.4853592706.

The spelling of 727750138 in words is "seven hundred twenty-seven million, seven hundred fifty thousand, one hundred thirty-eight".