28688341 has 8 divisors (see below), whose sum is σ = 31336704. Its totient is φ = 26046720.

The previous prime is 28688323. The next prime is 28688371. The reversal of 28688341 is 14388682.

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 28688341 - 2⁷ = 28688213 is a prime.

It is a super-3 number, since 3×28688341³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28688294 and 28688303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28688321) 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, 12316 + ... + 14458.

It is an arithmetic number, because the mean of its divisors is an integer number (3917088).

Almost surely, 2^28688341 is an apocalyptic number.

It is an amenable number.

28688341 is a deficient number, since it is larger than the sum of its proper divisors (2648363).

28688341 is a wasteful number, since it uses less digits than its factorization.

28688341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371.

The product of its digits is 73728, while the sum is 40.

The square root of 28688341 is about 5356.1498298685. The cubic root of 28688341 is about 306.1271240498.

The spelling of 28688341 in words is "twenty-eight million, six hundred eighty-eight thousand, three hundred forty-one".