728683222 has 8 divisors (see below), whose sum is σ = 1093142736. Its totient is φ = 364302312.

The previous prime is 728683211. The next prime is 728683237. The reversal of 728683222 is 222386827.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17808 + ... + 42124.

It is an arithmetic number, because the mean of its divisors is an integer number (136642842).

Almost surely, 2^728683222 is an apocalyptic number.

728683222 is a deficient number, since it is larger than the sum of its proper divisors (364459514).

728683222 is a wasteful number, since it uses less digits than its factorization.

728683222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39302.

The product of its digits is 129024, while the sum is 40.

The square root of 728683222 is about 26994.1331033245. The cubic root of 728683222 is about 899.8696197963.

The spelling of 728683222 in words is "seven hundred twenty-eight million, six hundred eighty-three thousand, two hundred twenty-two".