728858149 has 4 divisors (see below), whose sum is σ = 729076480. Its totient is φ = 728639820.

The previous prime is 728858147. The next prime is 728858159. The reversal of 728858149 is 941858827.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 728858149 - 2¹ = 728858147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 728858096 and 728858105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728858147) 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 3 ways as a sum of consecutive naturals, for example, 104079 + ... + 110860.

It is an arithmetic number, because the mean of its divisors is an integer number (182269120).

Almost surely, 2^728858149 is an apocalyptic number.

It is an amenable number.

728858149 is a deficient number, since it is larger than the sum of its proper divisors (218331).

728858149 is a wasteful number, since it uses less digits than its factorization.

728858149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218330.

The product of its digits is 1290240, while the sum is 52.

The square root of 728858149 is about 26997.3730018311. The cubic root of 728858149 is about 899.9416213162.

The spelling of 728858149 in words is "seven hundred twenty-eight million, eight hundred fifty-eight thousand, one hundred forty-nine".