727223138 has 32 divisors (see below), whose sum is σ = 1178496000. Its totient is φ = 335449296.

The previous prime is 727223087. The next prime is 727223143. The reversal of 727223138 is 831322727.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 727223098 and 727223107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 978395 + ... + 979137.

It is an arithmetic number, because the mean of its divisors is an integer number (36828000).

Almost surely, 2^727223138 is an apocalyptic number.

727223138 is a deficient number, since it is larger than the sum of its proper divisors (451272862).

727223138 is a wasteful number, since it uses less digits than its factorization.

727223138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406.

The product of its digits is 28224, while the sum is 35.

The square root of 727223138 is about 26967.0750731332. The cubic root of 727223138 is about 899.2681861740.

The spelling of 727223138 in words is "seven hundred twenty-seven million, two hundred twenty-three thousand, one hundred thirty-eight".