28768441 has 8 divisors (see below), whose sum is σ = 31074120. Its totient is φ = 26476032.

The previous prime is 28768427. The next prime is 28768447. The reversal of 28768441 is 14486782.

It can be written as a sum of positive squares in 4 ways, for example, as 92416 + 28676025 = 304^2 + 5355^2 .

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 28768441 - 2¹¹ = 28766393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28768394 and 28768403.

It is not an unprimeable number, because it can be changed into a prime (28768447) 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, 1455 + ... + 7723.

It is an arithmetic number, because the mean of its divisors is an integer number (3884265).

Almost surely, 2^28768441 is an apocalyptic number.

It is an amenable number.

28768441 is a deficient number, since it is larger than the sum of its proper divisors (2305679).

28768441 is a wasteful number, since it uses less digits than its factorization.

28768441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6635.

The product of its digits is 86016, while the sum is 40.

The square root of 28768441 is about 5363.6220038329. The cubic root of 28768441 is about 306.4117692614.

The spelling of 28768441 in words is "twenty-eight million, seven hundred sixty-eight thousand, four hundred forty-one".