28090635 has 16 divisors (see below), whose sum is σ = 45086496. Its totient is φ = 14934528.

The previous prime is 28090633. The next prime is 28090637. The reversal of 28090635 is 53609082.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28090633) and next prime (28090637).

It is not a de Polignac number, because 28090635 - 2¹ = 28090633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28090596 and 28090605.

It is not an unprimeable number, because it can be changed into a prime (28090633) 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 in 15 ways as a sum of consecutive naturals, for example, 2277 + ... + 7833.

It is an arithmetic number, because the mean of its divisors is an integer number (2817906).

Almost surely, 2^28090635 is an apocalyptic number.

28090635 is a deficient number, since it is larger than the sum of its proper divisors (16995861).

28090635 is a wasteful number, since it uses less digits than its factorization.

28090635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5902.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 28090635 is about 5300.0599053218. The cubic root of 28090635 is about 303.9861886327.

The spelling of 28090635 in words is "twenty-eight million, ninety thousand, six hundred thirty-five".