28968111 has 20 divisors (see below), whose sum is σ = 44285032. Its totient is φ = 18860688.

The previous prime is 28968101. The next prime is 28968139. The reversal of 28968111 is 11186982.

It is not a de Polignac number, because 28968111 - 2¹³ = 28959919 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 (28968101) 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 19 ways as a sum of consecutive naturals, for example, 676 + ... + 7641.

Almost surely, 2^28968111 is an apocalyptic number.

28968111 is a deficient number, since it is larger than the sum of its proper divisors (15316921).

28968111 is an equidigital number, since it uses as much as digits as its factorization.

28968111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8372 (or 8363 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 28968111 is about 5382.2031734226. The cubic root of 28968111 is about 307.1190284947.

The spelling of 28968111 in words is "twenty-eight million, nine hundred sixty-eight thousand, one hundred eleven".