28135960 has 32 divisors (see below), whose sum is σ = 66639600. Its totient is φ = 10661760.

The previous prime is 28135957. The next prime is 28135973. The reversal of 28135960 is 6953182.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17751 + ... + 19270.

Almost surely, 2^28135960 is an apocalyptic number.

28135960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28135960 is an abundant number, since it is smaller than the sum of its proper divisors (38503640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28135960 is a wasteful number, since it uses less digits than its factorization.

28135960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37051 (or 37047 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 28135960 is about 5304.3340769601. The cubic root of 28135960 is about 304.1495974241.

It can be divided in two parts, 281 and 35960, that multiplied together give a triangular number (10104760 = T₄₄₉₅).

The spelling of 28135960 in words is "twenty-eight million, one hundred thirty-five thousand, nine hundred sixty".