28161035 has 24 divisors (see below), whose sum is σ = 39644640. Its totient is φ = 19146624.

The previous prime is 28161031. The next prime is 28161041. The reversal of 28161035 is 53016182.

It is not a de Polignac number, because 28161035 - 2² = 28161031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28160995 and 28161013.

It is not an unprimeable number, because it can be changed into a prime (28161031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33146 + ... + 33984.

It is an arithmetic number, because the mean of its divisors is an integer number (1651860).

Almost surely, 2^28161035 is an apocalyptic number.

28161035 is a deficient number, since it is larger than the sum of its proper divisors (11483605).

28161035 is a wasteful number, since it uses less digits than its factorization.

28161035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 28161035 is about 5306.6971837481. The cubic root of 28161035 is about 304.2399241408.

It can be divided in two parts, 281 and 61035, that added together give a palindrome (61316).

The spelling of 28161035 in words is "twenty-eight million, one hundred sixty-one thousand, thirty-five".