28398614 has 4 divisors (see below), whose sum is σ = 42597924. Its totient is φ = 14199306.

The previous prime is 28398613. The next prime is 28398641. The reversal of 28398614 is 41689382.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28398613) by changing a digit.

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 as a sum of consecutive naturals, namely, 7099652 + ... + 7099655.

It is an arithmetic number, because the mean of its divisors is an integer number (10649481).

Almost surely, 2^28398614 is an apocalyptic number.

28398614 is a deficient number, since it is larger than the sum of its proper divisors (14199310).

28398614 is a wasteful number, since it uses less digits than its factorization.

28398614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14199309.

The product of its digits is 82944, while the sum is 41.

The square root of 28398614 is about 5329.0349970703. The cubic root of 28398614 is about 305.0930970844.

The spelling of 28398614 in words is "twenty-eight million, three hundred ninety-eight thousand, six hundred fourteen".