28704950 has 12 divisors (see below), whose sum is σ = 53391300. Its totient is φ = 11481960.

The previous prime is 28704947. The next prime is 28704979. The reversal of 28704950 is 5940782.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28704950.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 287000 + ... + 287099.

It is an arithmetic number, because the mean of its divisors is an integer number (4449275).

Almost surely, 2^28704950 is an apocalyptic number.

28704950 is a deficient number, since it is larger than the sum of its proper divisors (24686350).

28704950 is a wasteful number, since it uses less digits than its factorization.

28704950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574111 (or 574106 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 28704950 is about 5357.7000662598. The cubic root of 28704950 is about 306.1861896764.

The spelling of 28704950 in words is "twenty-eight million, seven hundred four thousand, nine hundred fifty".