28306441 has 8 divisors (see below), whose sum is σ = 29933568. Its totient is φ = 26724000.

The previous prime is 28306393. The next prime is 28306459. The reversal of 28306441 is 14460382.

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 28306441 - 2⁹ = 28305929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28306541) 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, 9865 + ... + 12406.

It is an arithmetic number, because the mean of its divisors is an integer number (3741696).

Almost surely, 2^28306441 is an apocalyptic number.

It is an amenable number.

28306441 is a deficient number, since it is larger than the sum of its proper divisors (1627127).

28306441 is a wasteful number, since it uses less digits than its factorization.

28306441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22343.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 28306441 is about 5320.3797796774. The cubic root of 28306441 is about 304.7626604725.

The spelling of 28306441 in words is "twenty-eight million, three hundred six thousand, four hundred forty-one".