28051914 has 24 divisors (see below), whose sum is σ = 61669440. Its totient is φ = 8500360.

The previous prime is 28051909. The next prime is 28051937. The reversal of 28051914 is 41915082.

It is a happy 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 11 ways as a sum of consecutive naturals, for example, 18594 + ... + 20045.

It is an arithmetic number, because the mean of its divisors is an integer number (2569560).

Almost surely, 2^28051914 is an apocalyptic number.

28051914 is an abundant number, since it is smaller than the sum of its proper divisors (33617526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28051914 is a wasteful number, since it uses less digits than its factorization.

28051914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38666 (or 38655 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 28051914 is about 5296.4057624015. The cubic root of 28051914 is about 303.8464497518.

Adding to 28051914 its reverse (41915082), we get a palindrome (69966996).

The spelling of 28051914 in words is "twenty-eight million, fifty-one thousand, nine hundred fourteen".