28182433 has 2 divisors, whose sum is σ = 28182434. Its totient is φ = 28182432.

The previous prime is 28182431. The next prime is 28182437. The reversal of 28182433 is 33428182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28174864 + 7569 = 5308^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 28182433 - 2¹ = 28182431 is a prime.

Together with 28182431, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 28182395 and 28182404.

It is not a weakly prime, because it can be changed into another prime (28182431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14091216 + 14091217.

It is an arithmetic number, because the mean of its divisors is an integer number (14091217).

Almost surely, 2^28182433 is an apocalyptic number.

It is an amenable number.

28182433 is a deficient number, since it is larger than the sum of its proper divisors (1).

28182433 is an equidigital number, since it uses as much as digits as its factorization.

28182433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 31.

The square root of 28182433 is about 5308.7129325289. The cubic root of 28182433 is about 304.3169629487.

The spelling of 28182433 in words is "twenty-eight million, one hundred eighty-two thousand, four hundred thirty-three".