28244361 has 8 divisors (see below), whose sum is σ = 39874464. Its totient is φ = 17721920.

The previous prime is 28244353. The next prime is 28244369. The reversal of 28244361 is 16344282.

It is an interprime number because it is at equal distance from previous prime (28244353) and next prime (28244369).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28244361 - 2³ = 28244353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28244369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276855 + ... + 276956.

It is an arithmetic number, because the mean of its divisors is an integer number (4984308).

Almost surely, 2^28244361 is an apocalyptic number.

It is an amenable number.

28244361 is a deficient number, since it is larger than the sum of its proper divisors (11630103).

28244361 is a wasteful number, since it uses less digits than its factorization.

28244361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553831.

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

The square root of 28244361 is about 5314.5424073950. The cubic root of 28244361 is about 304.5397016296.

The spelling of 28244361 in words is "twenty-eight million, two hundred forty-four thousand, three hundred sixty-one".