28787183 has 2 divisors, whose sum is σ = 28787184. Its totient is φ = 28787182.

The previous prime is 28787177. The next prime is 28787203. The reversal of 28787183 is 38178782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28787183 - 2¹⁴ = 28770799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28787123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14393591 + 14393592.

It is an arithmetic number, because the mean of its divisors is an integer number (14393592).

Almost surely, 2^28787183 is an apocalyptic number.

28787183 is a deficient number, since it is larger than the sum of its proper divisors (1).

28787183 is an equidigital number, since it uses as much as digits as its factorization.

28787183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 44.

The square root of 28787183 is about 5365.3688596405. The cubic root of 28787183 is about 306.4782949696.

The spelling of 28787183 in words is "twenty-eight million, seven hundred eighty-seven thousand, one hundred eighty-three".