28203433 has 2 divisors, whose sum is σ = 28203434. Its totient is φ = 28203432.

The previous prime is 28203407. The next prime is 28203481. The reversal of 28203433 is 33430282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23843689 + 4359744 = 4883^2 + 2088^2 .

It is a cyclic number.

It is not a de Polignac number, because 28203433 - 2¹⁷ = 28072361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28203398 and 28203407.

It is not a weakly prime, because it can be changed into another prime (28203233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14101716 + 14101717.

It is an arithmetic number, because the mean of its divisors is an integer number (14101717).

Almost surely, 2^28203433 is an apocalyptic number.

It is an amenable number.

28203433 is a deficient number, since it is larger than the sum of its proper divisors (1).

28203433 is an equidigital number, since it uses as much as digits as its factorization.

28203433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 28203433 is about 5310.6904447539. The cubic root of 28203433 is about 304.3925309401.

The spelling of 28203433 in words is "twenty-eight million, two hundred three thousand, four hundred thirty-three".