28443132 has 18 divisors (see below), whose sum is σ = 71898008. Its totient is φ = 9481032.

The previous prime is 28443119. The next prime is 28443197. The reversal of 28443132 is 23134482.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 28443096 and 28443105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 395008 + ... + 395079.

Almost surely, 2^28443132 is an apocalyptic number.

It is an amenable number.

28443132 is an abundant number, since it is smaller than the sum of its proper divisors (43454876).

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

28443132 is a wasteful number, since it uses less digits than its factorization.

28443132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790097 (or 790092 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 28443132 is about 5333.2102902473. The cubic root of 28443132 is about 305.2524363571.

The spelling of 28443132 in words is "twenty-eight million, four hundred forty-three thousand, one hundred thirty-two".