32228028 has 144 divisors (see below), whose sum is σ = 100638720. Its totient is φ = 8491392.

The previous prime is 32228023. The next prime is 32228033. The reversal of 32228028 is 82082223.

It is an interprime number because it is at equal distance from previous prime (32228023) and next prime (32228033).

It is a junction number, because it is equal to n+sod(n) for n = 32227992 and 32228010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32228023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 253701 + ... + 253827.

It is an arithmetic number, because the mean of its divisors is an integer number (698880).

Almost surely, 2^32228028 is an apocalyptic number.

32228028 is a gapful number since it is divisible by the number (38) 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 32228028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50319360).

32228028 is an abundant number, since it is smaller than the sum of its proper divisors (68410692).

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

32228028 is a wasteful number, since it uses less digits than its factorization.

32228028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 32228028 is about 5676.9734894572. The cubic root of 32228028 is about 318.2325343227.

The spelling of 32228028 in words is "thirty-two million, two hundred twenty-eight thousand, twenty-eight".