28466244 has 36 divisors (see below), whose sum is σ = 72678060. Its totient is φ = 9393600.

The previous prime is 28466239. The next prime is 28466267. The reversal of 28466244 is 44266482.

It is a happy number.

28466244 is a `hidden beast` number, since 28 + 4 + 6 + 624 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16646400 + 11819844 = 4080^2 + 3438^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 28466199 and 28466208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 279 + ... + 7550.

It is an arithmetic number, because the mean of its divisors is an integer number (2018835).

Almost surely, 2^28466244 is an apocalyptic number.

It is an amenable number.

28466244 is an abundant number, since it is smaller than the sum of its proper divisors (44211816).

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

28466244 is a wasteful number, since it uses less digits than its factorization.

28466244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7940 (or 7935 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The square root of 28466244 is about 5335.3766502469. The cubic root of 28466244 is about 305.3350935024.

The spelling of 28466244 in words is "twenty-eight million, four hundred sixty-six thousand, two hundred forty-four".