28359556 has 6 divisors (see below), whose sum is σ = 49629230. Its totient is φ = 14179776.

The previous prime is 28359521. The next prime is 28359607. The reversal of 28359556 is 65595382.

It can be written as a sum of positive squares in only one way, i.e., 22278400 + 6081156 = 4720^2 + 2466^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3544941 + ... + 3544948.

Almost surely, 2^28359556 is an apocalyptic number.

It is an amenable number.

28359556 is a deficient number, since it is larger than the sum of its proper divisors (21269674).

28359556 is a wasteful number, since it uses less digits than its factorization.

28359556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7089893 (or 7089891 counting only the distinct ones).

The product of its digits is 324000, while the sum is 43.

The square root of 28359556 is about 5325.3690951896. The cubic root of 28359556 is about 304.9531631026.

The spelling of 28359556 in words is "twenty-eight million, three hundred fifty-nine thousand, five hundred fifty-six".