729715968 has 54 divisors (see below), whose sum is σ = 2103957674. Its totient is φ = 243237888.

The previous prime is 729715949. The next prime is 729715979. The reversal of 729715968 is 869517927.

It can be written as a sum of positive squares in only one way, i.e., 707134464 + 22581504 = 26592^2 + 4752^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156055 + ... + 160662.

Almost surely, 2^729715968 is an apocalyptic number.

It is an amenable number.

729715968 is an abundant number, since it is smaller than the sum of its proper divisors (1374241706).

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

729715968 is a wasteful number, since it uses less digits than its factorization.

729715968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316739 (or 316722 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 54.

The square root of 729715968 is about 27013.2554128524. The cubic root of 729715968 is about 900.2945406330.

The spelling of 729715968 in words is "seven hundred twenty-nine million, seven hundred fifteen thousand, nine hundred sixty-eight".