728953261923 has 8 divisors (see below), whose sum is σ = 971942769936. Its totient is φ = 485966297600.

The previous prime is 728953261913. The next prime is 728953261951. The reversal of 728953261923 is 329162359827.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 728953261923 - 2⁸ = 728953261667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728953261903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183643 + ... + 1221323.

It is an arithmetic number, because the mean of its divisors is an integer number (121492846242).

Almost surely, 2^728953261923 is an apocalyptic number.

728953261923 is a deficient number, since it is larger than the sum of its proper divisors (242989508013).

728953261923 is a wasteful number, since it uses less digits than its factorization.

728953261923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271845.

The product of its digits is 9797760, while the sum is 57.

The spelling of 728953261923 in words is "seven hundred twenty-eight billion, nine hundred fifty-three million, two hundred sixty-one thousand, nine hundred twenty-three".