28813101 has 8 divisors (see below), whose sum is σ = 40439520. Its totient is φ = 18197712.

The previous prime is 28813087. The next prime is 28813129. The reversal of 28813101 is 10131882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28813101 - 2¹⁴ = 28796717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28813801) 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, 252690 + ... + 252803.

It is an arithmetic number, because the mean of its divisors is an integer number (5054940).

Almost surely, 2^28813101 is an apocalyptic number.

It is an amenable number.

28813101 is a deficient number, since it is larger than the sum of its proper divisors (11626419).

28813101 is a wasteful number, since it uses less digits than its factorization.

28813101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505515.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 28813101 is about 5367.7836208253. The cubic root of 28813101 is about 306.5702447072.

Adding to 28813101 its reverse (10131882), we get a palindrome (38944983).

The spelling of 28813101 in words is "twenty-eight million, eight hundred thirteen thousand, one hundred one".