28192032 has 108 divisors (see below), whose sum is σ = 88230870. Its totient is φ = 8532480.

The previous prime is 28191979. The next prime is 28192037. The reversal of 28192032 is 23029182.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18974736 + 9217296 = 4356^2 + 3036^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28191987 and 28192005.

It is not an unprimeable number, because it can be changed into a prime (28192037) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 34444 + ... + 35252.

Almost surely, 2^28192032 is an apocalyptic number.

28192032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28192032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44115435).

28192032 is an abundant number, since it is smaller than the sum of its proper divisors (60038838).

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

28192032 is a wasteful number, since it uses less digits than its factorization.

28192032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 825 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28192032 is about 5309.6169353354. The cubic root of 28192032 is about 304.3515093739.

It can be divided in two parts, 2819 and 2032, that added together give a triangular number (4851 = T₉₈).

The spelling of 28192032 in words is "twenty-eight million, one hundred ninety-two thousand, thirty-two".