28120414 has 24 divisors (see below), whose sum is σ = 51956640. Its totient is φ = 11342016.

The previous prime is 28120387. The next prime is 28120423. The reversal of 28120414 is 41402182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6774 + ... + 10105.

It is an arithmetic number, because the mean of its divisors is an integer number (2164860).

Almost surely, 2^28120414 is an apocalyptic number.

28120414 is a deficient number, since it is larger than the sum of its proper divisors (23836226).

28120414 is a wasteful number, since it uses less digits than its factorization.

28120414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16912 (or 16905 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 28120414 is about 5302.8684690458. The cubic root of 28120414 is about 304.0935697078.

Adding to 28120414 its reverse (41402182), we get a palindrome (69522596).

The spelling of 28120414 in words is "twenty-eight million, one hundred twenty thousand, four hundred fourteen".