28166532 has 48 divisors (see below), whose sum is σ = 68064192. Its totient is φ = 9060480.

The previous prime is 28166527. The next prime is 28166561. The reversal of 28166532 is 23566182.

It is a junction number, because it is equal to n+sod(n) for n = 28166493 and 28166502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42282 + ... + 42942.

It is an arithmetic number, because the mean of its divisors is an integer number (1418004).

Almost surely, 2^28166532 is an apocalyptic number.

It is an amenable number.

28166532 is an abundant number, since it is smaller than the sum of its proper divisors (39897660).

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

28166532 is a wasteful number, since it uses less digits than its factorization.

28166532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788 (or 786 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 28166532 is about 5307.2150889143. The cubic root of 28166532 is about 304.2597186081.

The spelling of 28166532 in words is "twenty-eight million, one hundred sixty-six thousand, five hundred thirty-two".