28662204 has 48 divisors (see below), whose sum is σ = 71517600. Its totient is φ = 8902656.

The previous prime is 28662199. The next prime is 28662247. The reversal of 28662204 is 40226682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21592 + ... + 22880.

It is an arithmetic number, because the mean of its divisors is an integer number (1489950).

Almost surely, 2^28662204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28662204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35758800).

28662204 is an abundant number, since it is smaller than the sum of its proper divisors (42855396).

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

28662204 is a wasteful number, since it uses less digits than its factorization.

28662204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 28662204 is about 5353.7093682792. The cubic root of 28662204 is about 306.0341283649.

Adding to 28662204 its reverse (40226682), we get a palindrome (68888886).

The spelling of 28662204 in words is "twenty-eight million, six hundred sixty-two thousand, two hundred four".