28224481 has 8 divisors (see below), whose sum is σ = 30045600. Its totient is φ = 26436960.

The previous prime is 28224433. The next prime is 28224529. The reversal of 28224481 is 18442282.

It is an interprime number because it is at equal distance from previous prime (28224433) and next prime (28224529).

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 28224481 - 2¹¹ = 28222433 is a prime.

It is a super-2 number, since 2×28224481² = 1593242655438722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28224401) 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, 6655 + ... + 10036.

It is an arithmetic number, because the mean of its divisors is an integer number (3755700).

Almost surely, 2^28224481 is an apocalyptic number.

It is an amenable number.

28224481 is a deficient number, since it is larger than the sum of its proper divisors (1821119).

28224481 is a wasteful number, since it uses less digits than its factorization.

28224481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16799.

The product of its digits is 8192, while the sum is 31.

The square root of 28224481 is about 5312.6717384006. The cubic root of 28224481 is about 304.4682340274.

The spelling of 28224481 in words is "twenty-eight million, two hundred twenty-four thousand, four hundred eighty-one".