28506101 has 16 divisors (see below), whose sum is σ = 32175360. Its totient is φ = 25072320.

The previous prime is 28506083. The next prime is 28506109. The reversal of 28506101 is 10160582.

It is a de Polignac number, because none of the positive numbers 2^k-28506101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28506109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30836 + ... + 31746.

It is an arithmetic number, because the mean of its divisors is an integer number (2010960).

Almost surely, 2^28506101 is an apocalyptic number.

It is an amenable number.

28506101 is a deficient number, since it is larger than the sum of its proper divisors (3669259).

28506101 is a wasteful number, since it uses less digits than its factorization.

28506101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 28506101 is about 5339.1105064421. The cubic root of 28506101 is about 305.4775319804.

Adding to 28506101 its reverse (10160582), we get a palindrome (38666683).

The spelling of 28506101 in words is "twenty-eight million, five hundred six thousand, one hundred one".