28505014 has 8 divisors (see below), whose sum is σ = 43157448. Its totient is φ = 14119200.

The previous prime is 28505011. The next prime is 28505021. The reversal of 28505014 is 41050582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28505014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28505011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66387 + ... + 66814.

It is an arithmetic number, because the mean of its divisors is an integer number (5394681).

Almost surely, 2^28505014 is an apocalyptic number.

28505014 is a deficient number, since it is larger than the sum of its proper divisors (14652434).

28505014 is a wasteful number, since it uses less digits than its factorization.

28505014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133310.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 28505014 is about 5339.0087094891. The cubic root of 28505014 is about 305.4736490889.

Adding to 28505014 its reverse (41050582), we get a palindrome (69555596).

The spelling of 28505014 in words is "twenty-eight million, five hundred five thousand, fourteen".