28661183 has 2 divisors, whose sum is σ = 28661184. Its totient is φ = 28661182.

The previous prime is 28661179. The next prime is 28661189. The reversal of 28661183 is 38116682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28661183 - 2² = 28661179 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28661189) 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 as a sum of consecutive naturals, namely, 14330591 + 14330592.

It is an arithmetic number, because the mean of its divisors is an integer number (14330592).

Almost surely, 2^28661183 is an apocalyptic number.

28661183 is a deficient number, since it is larger than the sum of its proper divisors (1).

28661183 is an equidigital number, since it uses as much as digits as its factorization.

28661183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 28661183 is about 5353.6140129823. The cubic root of 28661183 is about 306.0304944904.

The spelling of 28661183 in words is "twenty-eight million, six hundred sixty-one thousand, one hundred eighty-three".