28643202 has 48 divisors (see below), whose sum is σ = 72146880. Its totient is φ = 8042976.

The previous prime is 28643201. The next prime is 28643207. The reversal of 28643202 is 20234682.

It is not an unprimeable number, because it can be changed into a prime (28643201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5508 + ... + 9360.

It is an arithmetic number, because the mean of its divisors is an integer number (1503060).

Almost surely, 2^28643202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28643202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36073440).

28643202 is an abundant number, since it is smaller than the sum of its proper divisors (43503678).

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

28643202 is a wasteful number, since it uses less digits than its factorization.

28643202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927 (or 3924 counting only the distinct ones).

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

The square root of 28643202 is about 5351.9344166385. The cubic root of 28643202 is about 305.9664835775.

Adding to 28643202 its reverse (20234682), we get a palindrome (48877884).

The spelling of 28643202 in words is "twenty-eight million, six hundred forty-three thousand, two hundred two".