727999780 has 24 divisors (see below), whose sum is σ = 1534623552. Its totient is φ = 290090592.

The previous prime is 727999759. The next prime is 727999781. The reversal of 727999780 is 87999727.

It is not an unprimeable number, because it can be changed into a prime (727999781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63942 + ... + 74461.

It is an arithmetic number, because the mean of its divisors is an integer number (63942648).

Almost surely, 2^727999780 is an apocalyptic number.

It is an amenable number.

727999780 is an abundant number, since it is smaller than the sum of its proper divisors (806623772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

727999780 is a wasteful number, since it uses less digits than its factorization.

727999780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138675 (or 138673 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 58.

The square root of 727999780 is about 26981.4710495925. The cubic root of 727999780 is about 899.5881984372.

The spelling of 727999780 in words is "seven hundred twenty-seven million, nine hundred ninety-nine thousand, seven hundred eighty".