28244196 has 18 divisors (see below), whose sum is σ = 71395142. Its totient is φ = 9414720.

The previous prime is 28244171. The next prime is 28244197. The reversal of 28244196 is 69144282.

It can be written as a sum of positive squares in only one way, i.e., 25401600 + 2842596 = 5040^2 + 1686^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 784561 = 28244196 / (2 + 8 + 2 + 4 + 4 + 1 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 28244196.

It is not an unprimeable number, because it can be changed into a prime (28244197) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 392245 + ... + 392316.

Almost surely, 2^28244196 is an apocalyptic number.

It is an amenable number.

28244196 is an abundant number, since it is smaller than the sum of its proper divisors (43150946).

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

28244196 is a wasteful number, since it uses less digits than its factorization.

28244196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784571 (or 784566 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 28244196 is about 5314.5268839286. The cubic root of 28244196 is about 304.5391086009.

The spelling of 28244196 in words is "twenty-eight million, two hundred forty-four thousand, one hundred ninety-six".