28968556 has 6 divisors (see below), whose sum is σ = 50694980. Its totient is φ = 14484276.

The previous prime is 28968551. The next prime is 28968557. The reversal of 28968556 is 65586982.

It is not an unprimeable number, because it can be changed into a prime (28968551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3621066 + ... + 3621073.

Almost surely, 2^28968556 is an apocalyptic number.

It is an amenable number.

28968556 is a deficient number, since it is larger than the sum of its proper divisors (21726424).

28968556 is a wasteful number, since it uses less digits than its factorization.

28968556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7242143 (or 7242141 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 49.

The square root of 28968556 is about 5382.2445132119. The cubic root of 28968556 is about 307.1206011121.

The spelling of 28968556 in words is "twenty-eight million, nine hundred sixty-eight thousand, five hundred fifty-six".