28318101 has 16 divisors (see below), whose sum is σ = 43352064. Its totient is φ = 16106544.

The previous prime is 28318093. The next prime is 28318117. The reversal of 28318101 is 10181382.

28318101 is nontrivially palindromic in base 12.

It is not a de Polignac number, because 28318101 - 2³ = 28318093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28314101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1660 + ... + 7706.

It is an arithmetic number, because the mean of its divisors is an integer number (2709504).

Almost surely, 2^28318101 is an apocalyptic number.

28318101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28318101 is a deficient number, since it is larger than the sum of its proper divisors (15033963).

28318101 is a wasteful number, since it uses less digits than its factorization.

28318101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6280.

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

The square root of 28318101 is about 5321.4754532930. The cubic root of 28318101 is about 304.8045007120.

Adding to 28318101 its reverse (10181382), we get a palindrome (38499483).

The spelling of 28318101 in words is "twenty-eight million, three hundred eighteen thousand, one hundred one".