28274441 has 8 divisors (see below), whose sum is σ = 30516360. Its totient is φ = 26042112.

The previous prime is 28274437. The next prime is 28274443. The reversal of 28274441 is 14447282.

It can be written as a sum of positive squares in 4 ways, for example, as 1700416 + 26574025 = 1304^2 + 5155^2 .

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 28274441 - 2² = 28274437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28274398 and 28274407.

It is not an unprimeable number, because it can be changed into a prime (28274443) 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, 4481 + ... + 8753.

It is an arithmetic number, because the mean of its divisors is an integer number (3814545).

Almost surely, 2^28274441 is an apocalyptic number.

It is an amenable number.

28274441 is a deficient number, since it is larger than the sum of its proper divisors (2241919).

28274441 is a wasteful number, since it uses less digits than its factorization.

28274441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4795.

The product of its digits is 14336, while the sum is 32.

The square root of 28274441 is about 5317.3716251547. The cubic root of 28274441 is about 304.6477739887.

The spelling of 28274441 in words is "twenty-eight million, two hundred seventy-four thousand, four hundred forty-one".