28660535 has 8 divisors (see below), whose sum is σ = 34437840. Its totient is φ = 22898304.

The previous prime is 28660519. The next prime is 28660543. The reversal of 28660535 is 53506682.

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 28660535 - 2⁴ = 28660519 is a prime.

It is a super-3 number, since 3×28660535³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28660495 and 28660504.

It is a congruent number.

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, 959 + ... + 7631.

It is an arithmetic number, because the mean of its divisors is an integer number (4304730).

Almost surely, 2^28660535 is an apocalyptic number.

28660535 is a deficient number, since it is larger than the sum of its proper divisors (5777305).

28660535 is an equidigital number, since it uses as much as digits as its factorization.

28660535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7537.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 28660535 is about 5353.5534927747. The cubic root of 28660535 is about 306.0281881276.

The spelling of 28660535 in words is "twenty-eight million, six hundred sixty thousand, five hundred thirty-five".