28204968 has 64 divisors (see below), whose sum is σ = 80985600. Its totient is φ = 8095680.

The previous prime is 28204951. The next prime is 28204973. The reversal of 28204968 is 86940282.

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, 2205 + ... + 7827.

It is an arithmetic number, because the mean of its divisors is an integer number (1265400).

Almost surely, 2^28204968 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 28204968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40492800).

28204968 is an abundant number, since it is smaller than the sum of its proper divisors (52780632).

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

28204968 is a wasteful number, since it uses less digits than its factorization.

28204968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5662 (or 5658 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 28204968 is about 5310.8349626024. The cubic root of 28204968 is about 304.3980531290.

The spelling of 28204968 in words is "twenty-eight million, two hundred four thousand, nine hundred sixty-eight".