28408112 has 20 divisors (see below), whose sum is σ = 55145280. Its totient is φ = 14177088.

The previous prime is 28408103. The next prime is 28408123. The reversal of 28408112 is 21180482.

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, 9089 + ... + 11807.

It is an arithmetic number, because the mean of its divisors is an integer number (2757264).

Almost surely, 2^28408112 is an apocalyptic number.

It is an amenable number.

28408112 is a deficient number, since it is larger than the sum of its proper divisors (26737168).

28408112 is a wasteful number, since it uses less digits than its factorization.

28408112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3380 (or 3374 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 28408112 is about 5329.9260782866. The cubic root of 28408112 is about 305.1271063878.

Adding to 28408112 its reverse (21180482), we get a palindrome (49588594).

The spelling of 28408112 in words is "twenty-eight million, four hundred eight thousand, one hundred twelve".