28699101 has 24 divisors (see below), whose sum is σ = 45539520. Its totient is φ = 17335296.

The previous prime is 28699091. The next prime is 28699109. The reversal of 28699101 is 10199682.

28699101 is nontrivially palindromic in base 7.

It is not a de Polignac number, because 28699101 - 2⁷ = 28698973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28699109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285 + ... + 7581.

It is an arithmetic number, because the mean of its divisors is an integer number (1897480).

Almost surely, 2^28699101 is an apocalyptic number.

It is an amenable number.

28699101 is a deficient number, since it is larger than the sum of its proper divisors (16840419).

28699101 is a wasteful number, since it uses less digits than its factorization.

28699101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7345 (or 7342 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 28699101 is about 5357.1541885594. The cubic root of 28699101 is about 306.1653918154.

The spelling of 28699101 in words is "twenty-eight million, six hundred ninety-nine thousand, one hundred one".