28671235 has 8 divisors (see below), whose sum is σ = 34558416. Its totient is φ = 22835040.

The previous prime is 28671229. The next prime is 28671257. The reversal of 28671235 is 53217682.

It is a happy number.

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

It is not a de Polignac number, because 28671235 - 2⁷ = 28671107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28671235.

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, 11496 + ... + 13765.

It is an arithmetic number, because the mean of its divisors is an integer number (4319802).

Almost surely, 2^28671235 is an apocalyptic number.

28671235 is a deficient number, since it is larger than the sum of its proper divisors (5887181).

28671235 is a wasteful number, since it uses less digits than its factorization.

28671235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25493.

The product of its digits is 20160, while the sum is 34.

The square root of 28671235 is about 5354.5527357567. The cubic root of 28671235 is about 306.0662671354.

The spelling of 28671235 in words is "twenty-eight million, six hundred seventy-one thousand, two hundred thirty-five".