28074635 has 4 divisors (see below), whose sum is σ = 33689568. Its totient is φ = 22459704.

The previous prime is 28074611. The next prime is 28074637. The reversal of 28074635 is 53647082.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28074635 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28074595 and 28074604.

It is not an unprimeable number, because it can be changed into a prime (28074637) 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, 2807459 + ... + 2807468.

It is an arithmetic number, because the mean of its divisors is an integer number (8422392).

Almost surely, 2^28074635 is an apocalyptic number.

28074635 is a deficient number, since it is larger than the sum of its proper divisors (5614933).

28074635 is an equidigital number, since it uses as much as digits as its factorization.

28074635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5614932.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 28074635 is about 5298.5502734239. The cubic root of 28074635 is about 303.9284623625.

The spelling of 28074635 in words is "twenty-eight million, seventy-four thousand, six hundred thirty-five".