727881385 has 16 divisors (see below), whose sum is σ = 1088986752. Its totient is φ = 453744000.

The previous prime is 727881373. The next prime is 727881389. The reversal of 727881385 is 583188727.

It is a happy number.

727881385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 727881385 - 2⁷ = 727881257 is a prime.

It is a super-2 number, since 2×727881385² = 1059622621259036450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (727881389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 944916 + ... + 945685.

It is an arithmetic number, because the mean of its divisors is an integer number (68061672).

Almost surely, 2^727881385 is an apocalyptic number.

It is an amenable number.

727881385 is a deficient number, since it is larger than the sum of its proper divisors (361105367).

727881385 is a wasteful number, since it uses less digits than its factorization.

727881385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890624.

The product of its digits is 752640, while the sum is 49.

The square root of 727881385 is about 26979.2769547295. The cubic root of 727881385 is about 899.5394289540.

The spelling of 727881385 in words is "seven hundred twenty-seven million, eight hundred eighty-one thousand, three hundred eighty-five".