28850113 has 4 divisors (see below), whose sum is σ = 30368560. Its totient is φ = 27331668.

The previous prime is 28850093. The next prime is 28850117. The reversal of 28850113 is 31105882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28850113 is a prime.

It is a super-2 number, since 2×28850113² = 1664658040225538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28850117) 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 3 ways as a sum of consecutive naturals, for example, 759195 + ... + 759232.

It is an arithmetic number, because the mean of its divisors is an integer number (7592140).

Almost surely, 2^28850113 is an apocalyptic number.

It is an amenable number.

28850113 is a deficient number, since it is larger than the sum of its proper divisors (1518447).

28850113 is a wasteful number, since it uses less digits than its factorization.

28850113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518446.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 28850113 is about 5371.2301198143. The cubic root of 28850113 is about 306.7014572743.

Adding to 28850113 its reverse (31105882), we get a palindrome (59955995).

The spelling of 28850113 in words is "twenty-eight million, eight hundred fifty thousand, one hundred thirteen".