728543902 has 4 divisors (see below), whose sum is σ = 1092815856. Its totient is φ = 364271950.

The previous prime is 728543839. The next prime is 728543917. The reversal of 728543902 is 209345827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 209345827 = 1283 ⋅163169.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 182135974 + ... + 182135977.

It is an arithmetic number, because the mean of its divisors is an integer number (273203964).

Almost surely, 2^728543902 is an apocalyptic number.

728543902 is a deficient number, since it is larger than the sum of its proper divisors (364271954).

728543902 is a wasteful number, since it uses less digits than its factorization.

728543902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364271953.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 728543902 is about 26991.5524192292. The cubic root of 728543902 is about 899.8122661925.

The spelling of 728543902 in words is "seven hundred twenty-eight million, five hundred forty-three thousand, nine hundred two".