28081032 has 32 divisors (see below), whose sum is σ = 80232000. Its totient is φ = 8023104.

The previous prime is 28081007. The next prime is 28081033. The reversal of 28081032 is 23018082.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 28080993 and 28081011.

It is not an unprimeable number, because it can be changed into a prime (28081033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83407 + ... + 83742.

It is an arithmetic number, because the mean of its divisors is an integer number (2507250).

Almost surely, 2^28081032 is an apocalyptic number.

It is an amenable number.

28081032 is an abundant number, since it is smaller than the sum of its proper divisors (52150968).

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

28081032 is a wasteful number, since it uses less digits than its factorization.

28081032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167165 (or 167161 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 28081032 is about 5299.1538947270. The cubic root of 28081032 is about 303.9515446777.

The spelling of 28081032 in words is "twenty-eight million, eighty-one thousand, thirty-two".