28790113 has 8 divisors (see below), whose sum is σ = 31617216. Its totient is φ = 25998000.

The previous prime is 28790093. The next prime is 28790119. The reversal of 28790113 is 31109782.

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 28790113 - 2⁵ = 28790081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28790119) 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, 7006 + ... + 10327.

It is an arithmetic number, because the mean of its divisors is an integer number (3952152).

Almost surely, 2^28790113 is an apocalyptic number.

It is an amenable number.

28790113 is a deficient number, since it is larger than the sum of its proper divisors (2827103).

28790113 is a wasteful number, since it uses less digits than its factorization.

28790113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17495.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 28790113 is about 5365.6419000899. The cubic root of 28790113 is about 306.4886925476.

Adding to 28790113 its reverse (31109782), we get a palindrome (59899895).

The spelling of 28790113 in words is "twenty-eight million, seven hundred ninety thousand, one hundred thirteen".