728890874 has 8 divisors (see below), whose sum is σ = 1113965460. Its totient is φ = 357569056.

The previous prime is 728890873. The next prime is 728890889. The reversal of 728890874 is 478098827.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 725494225 + 3396649 = 26935^2 + 1843^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (53).

It is not an unprimeable number, because it can be changed into a prime (728890873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3438059 + ... + 3438270.

Almost surely, 2^728890874 is an apocalyptic number.

728890874 is a deficient number, since it is larger than the sum of its proper divisors (385074586).

728890874 is a wasteful number, since it uses less digits than its factorization.

728890874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6876384.

The product of its (nonzero) digits is 1806336, while the sum is 53.

The square root of 728890874 is about 26997.9790725158. The cubic root of 728890874 is about 899.9550899401.

The spelling of 728890874 in words is "seven hundred twenty-eight million, eight hundred ninety thousand, eight hundred seventy-four".