28681301 has 8 divisors (see below), whose sum is σ = 32016864. Its totient is φ = 25467120.

The previous prime is 28681297. The next prime is 28681313. The reversal of 28681301 is 10318682.

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 28681301 - 2² = 28681297 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28681351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29846 + ... + 30791.

It is an arithmetic number, because the mean of its divisors is an integer number (4002108).

Almost surely, 2^28681301 is an apocalyptic number.

It is an amenable number.

28681301 is a deficient number, since it is larger than the sum of its proper divisors (3335563).

28681301 is a wasteful number, since it uses less digits than its factorization.

28681301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60691.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 28681301 is about 5355.4926010592. The cubic root of 28681301 is about 306.1020812253.

Adding to 28681301 its reverse (10318682), we get a palindrome (38999983).

It can be divided in two parts, 28681 and 301, that added together give a palindrome (28982).

The spelling of 28681301 in words is "twenty-eight million, six hundred eighty-one thousand, three hundred one".