28113767 has 16 divisors (see below), whose sum is σ = 32724000. Its totient is φ = 23869440.

The previous prime is 28113739. The next prime is 28113781. The reversal of 28113767 is 76731182.

It is a cyclic number.

It is not a de Polignac number, because 28113767 - 2¹⁰ = 28112743 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 (28113727) 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 15 ways as a sum of consecutive naturals, for example, 27359 + ... + 28367.

It is an arithmetic number, because the mean of its divisors is an integer number (2045250).

Almost surely, 2^28113767 is an apocalyptic number.

28113767 is a deficient number, since it is larger than the sum of its proper divisors (4610233).

28113767 is a wasteful number, since it uses less digits than its factorization.

28113767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186.

The product of its digits is 14112, while the sum is 35.

The square root of 28113767 is about 5302.2416957359. The cubic root of 28113767 is about 304.0696076466.

The spelling of 28113767 in words is "twenty-eight million, one hundred thirteen thousand, seven hundred sixty-seven".