28609635 has 8 divisors (see below), whose sum is σ = 45775440. Its totient is φ = 15258464.

The previous prime is 28609627. The next prime is 28609643. The reversal of 28609635 is 53690682.

It is an interprime number because it is at equal distance from previous prime (28609627) and next prime (28609643).

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 28609635 - 2³ = 28609627 is a prime.

It is a super-2 number, since 2×28609635² = 1637022429666450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28609593 and 28609602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 953640 + ... + 953669.

It is an arithmetic number, because the mean of its divisors is an integer number (5721930).

Almost surely, 2^28609635 is an apocalyptic number.

28609635 is a deficient number, since it is larger than the sum of its proper divisors (17165805).

28609635 is a wasteful number, since it uses less digits than its factorization.

28609635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907317.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 28609635 is about 5348.7975284170. The cubic root of 28609635 is about 305.8469160385.

The spelling of 28609635 in words is "twenty-eight million, six hundred nine thousand, six hundred thirty-five".