728667754 has 8 divisors (see below), whose sum is σ = 1094865408. Its totient is φ = 363712620.

The previous prime is 728667749. The next prime is 728667773. The reversal of 728667754 is 457766827.

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

It is an unprimeable number.

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, 309162 + ... + 311509.

It is an arithmetic number, because the mean of its divisors is an integer number (136858176).

Almost surely, 2^728667754 is an apocalyptic number.

728667754 is a deficient number, since it is larger than the sum of its proper divisors (366197654).

728667754 is a wasteful number, since it uses less digits than its factorization.

728667754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621260.

The product of its digits is 3951360, while the sum is 52.

The square root of 728667754 is about 26993.8465951039. The cubic root of 728667754 is about 899.8632524744.

The spelling of 728667754 in words is "seven hundred twenty-eight million, six hundred sixty-seven thousand, seven hundred fifty-four".