28185032 has 12 divisors (see below), whose sum is σ = 52875105. Its totient is φ = 14085008.

The previous prime is 28185019. The next prime is 28185061. The reversal of 28185032 is 23058182.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 27730756 + 454276 = 5266^2 + 674^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3754.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28184986 and 28185004.

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 2 ways as a sum of consecutive naturals, for example, 14078 + ... + 15954.

Almost surely, 2^28185032 is an apocalyptic number.

It is an amenable number.

28185032 is a deficient number, since it is larger than the sum of its proper divisors (24690073).

28185032 is an frugal number, since it uses more digits than its factorization.

28185032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3760 (or 1879 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 28185032 is about 5308.9577131486. The cubic root of 28185032 is about 304.3263174223.

The spelling of 28185032 in words is "twenty-eight million, one hundred eighty-five thousand, thirty-two".