728723000158 has 4 divisors (see below), whose sum is σ = 1093084500240. Its totient is φ = 364361500078.

The previous prime is 728723000141. The next prime is 728723000179. The reversal of 728723000158 is 851000327827.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182180750038 + ... + 182180750041.

It is an arithmetic number, because the mean of its divisors is an integer number (273271125060).

Almost surely, 2^728723000158 is an apocalyptic number.

728723000158 is a deficient number, since it is larger than the sum of its proper divisors (364361500082).

728723000158 is a wasteful number, since it uses less digits than its factorization.

728723000158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364361500081.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 728723000158 in words is "seven hundred twenty-eight billion, seven hundred twenty-three million, one hundred fifty-eight", and thus it is an aban number.