28769635 has 4 divisors (see below), whose sum is σ = 34523568. Its totient is φ = 23015704.

The previous prime is 28769633. The next prime is 28769641. The reversal of 28769635 is 53696782.

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

It is a cyclic number.

It is not a de Polignac number, because 28769635 - 2¹ = 28769633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28769633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2876959 + ... + 2876968.

It is an arithmetic number, because the mean of its divisors is an integer number (8630892).

Almost surely, 2^28769635 is an apocalyptic number.

28769635 is a deficient number, since it is larger than the sum of its proper divisors (5753933).

28769635 is an equidigital number, since it uses as much as digits as its factorization.

28769635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5753932.

The product of its digits is 544320, while the sum is 46.

The square root of 28769635 is about 5363.7333080607. The cubic root of 28769635 is about 306.4160082884.

The spelling of 28769635 in words is "twenty-eight million, seven hundred sixty-nine thousand, six hundred thirty-five".