28894851 has 12 divisors (see below), whose sum is σ = 41847312. Its totient is φ = 19212336.

The previous prime is 28894843. The next prime is 28894871. The reversal of 28894851 is 15849882.

It is a happy number.

It is not a de Polignac number, because 28894851 - 2³ = 28894843 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28894797 and 28894806.

It is not an unprimeable number, because it can be changed into a prime (28894871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471 + ... + 7616.

It is an arithmetic number, because the mean of its divisors is an integer number (3487276).

Almost surely, 2^28894851 is an apocalyptic number.

28894851 is a deficient number, since it is larger than the sum of its proper divisors (12952461).

28894851 is a wasteful number, since it uses less digits than its factorization.

28894851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8490 (or 8487 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 28894851 is about 5375.3931019043. The cubic root of 28894851 is about 306.8599098413.

The spelling of 28894851 in words is "twenty-eight million, eight hundred ninety-four thousand, eight hundred fifty-one".