28013635 has 8 divisors (see below), whose sum is σ = 36202320. Its totient is φ = 20686944.

The previous prime is 28013621. The next prime is 28013641. The reversal of 28013635 is 53631082.

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

It is a cyclic number.

It is not a de Polignac number, because 28013635 - 2¹⁷ = 27882563 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215425 + ... + 215554.

It is an arithmetic number, because the mean of its divisors is an integer number (4525290).

Almost surely, 2^28013635 is an apocalyptic number.

28013635 is a deficient number, since it is larger than the sum of its proper divisors (8188685).

28013635 is a wasteful number, since it uses less digits than its factorization.

28013635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430997.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 28013635 is about 5292.7908517152. The cubic root of 28013635 is about 303.7081795348.

The spelling of 28013635 in words is "twenty-eight million, thirteen thousand, six hundred thirty-five".