729723976 has 16 divisors (see below), whose sum is σ = 1368522540. Its totient is φ = 364784640.

The previous prime is 729723971. The next prime is 729723979. The reversal of 729723976 is 679327927.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 714279076 + 15444900 = 26726^2 + 3930^2 .

It is a super-2 number, since 2×729723976² = 1064994162298497152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (729723971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59700 + ... + 70876.

Almost surely, 2^729723976 is an apocalyptic number.

It is an amenable number.

729723976 is a deficient number, since it is larger than the sum of its proper divisors (638798564).

729723976 is a wasteful number, since it uses less digits than its factorization.

729723976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19344 (or 19340 counting only the distinct ones).

The product of its digits is 2000376, while the sum is 52.

The square root of 729723976 is about 27013.4036359730. The cubic root of 729723976 is about 900.2978339382.

The spelling of 729723976 in words is "seven hundred twenty-nine million, seven hundred twenty-three thousand, nine hundred seventy-six".