728722858 has 8 divisors (see below), whose sum is σ = 1103300352. Its totient is φ = 360956076.

The previous prime is 728722853. The next prime is 728722861. The reversal of 728722858 is 858227827.

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

It is not an unprimeable number, because it can be changed into a prime (728722853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1702410 + ... + 1702837.

It is an arithmetic number, because the mean of its divisors is an integer number (137912544).

Almost surely, 2^728722858 is an apocalyptic number.

728722858 is a deficient number, since it is larger than the sum of its proper divisors (374577494).

728722858 is a wasteful number, since it uses less digits than its factorization.

728722858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405356.

The product of its digits is 1003520, while the sum is 49.

The square root of 728722858 is about 26994.8672528686. The cubic root of 728722858 is about 899.8859353385.

The spelling of 728722858 in words is "seven hundred twenty-eight million, seven hundred twenty-two thousand, eight hundred fifty-eight".