28046885 has 8 divisors (see below), whose sum is σ = 34208376. Its totient is φ = 22069440.

The previous prime is 28046881. The next prime is 28046897. The reversal of 28046885 is 58864082.

It can be written as a sum of positive squares in 4 ways, for example, as 20449 + 28026436 = 143^2 + 5294^2 .

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

It is not a de Polignac number, because 28046885 - 2² = 28046881 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28046881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45674 + ... + 46283.

It is an arithmetic number, because the mean of its divisors is an integer number (4276047).

Almost surely, 2^28046885 is an apocalyptic number.

It is an amenable number.

28046885 is a deficient number, since it is larger than the sum of its proper divisors (6161491).

28046885 is an equidigital number, since it uses as much as digits as its factorization.

28046885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92023.

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 28046885 is about 5295.9309851999. The cubic root of 28046885 is about 303.8282913340.

The spelling of 28046885 in words is "twenty-eight million, forty-six thousand, eight hundred eighty-five".