726673928 has 8 divisors (see below), whose sum is σ = 1362513630. Its totient is φ = 363336960.

The previous prime is 726673921. The next prime is 726673933. The reversal of 726673928 is 829376627.

It can be written as a sum of positive squares in only one way, i.e., 377058724 + 349615204 = 19418^2 + 18698^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (726673921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45417113 + ... + 45417128.

Almost surely, 2^726673928 is an apocalyptic number.

It is an amenable number.

726673928 is a deficient number, since it is larger than the sum of its proper divisors (635839702).

726673928 is a wasteful number, since it uses less digits than its factorization.

726673928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90834247 (or 90834243 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 50.

The square root of 726673928 is about 26956.8901767248. The cubic root of 726673928 is about 899.0417488138.

The spelling of 726673928 in words is "seven hundred twenty-six million, six hundred seventy-three thousand, nine hundred twenty-eight".