28473165 has 72 divisors (see below), whose sum is σ = 59131800. Its totient is φ = 12628224.

The previous prime is 28473163. The next prime is 28473167. The reversal of 28473165 is 56137482.

28473165 is a `hidden beast` number, since 28 + 473 + 165 = 666.

It is an interprime number because it is at equal distance from previous prime (28473163) and next prime (28473167).

It can be written as a sum of positive squares in 4 ways, for example, as 11009124 + 17464041 = 3318^2 + 4179^2 .

It is not a de Polignac number, because 28473165 - 2¹ = 28473163 is a prime.

It is a super-2 number, since 2×28473165² = 1621442250234450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28473161) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 81411 + ... + 81759.

It is an arithmetic number, because the mean of its divisors is an integer number (821275).

Almost surely, 2^28473165 is an apocalyptic number.

It is an amenable number.

28473165 is an abundant number, since it is smaller than the sum of its proper divisors (30658635).

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

28473165 is a wasteful number, since it uses less digits than its factorization.

28473165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 401 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 28473165 is about 5336.0252060874. The cubic root of 28473165 is about 305.3598368784.

The spelling of 28473165 in words is "twenty-eight million, four hundred seventy-three thousand, one hundred sixty-five".