28219033 has 2 divisors, whose sum is σ = 28219034. Its totient is φ = 28219032.

The previous prime is 28219007. The next prime is 28219063. The reversal of 28219033 is 33091282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22401289 + 5817744 = 4733^2 + 2412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28219033 is a prime.

It is equal to p_1754191 and since 28219033 and 1754191 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 28218992 and 28219010.

It is not a weakly prime, because it can be changed into another prime (28219063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14109516 + 14109517.

It is an arithmetic number, because the mean of its divisors is an integer number (14109517).

Almost surely, 2^28219033 is an apocalyptic number.

It is an amenable number.

28219033 is a deficient number, since it is larger than the sum of its proper divisors (1).

28219033 is an equidigital number, since it uses as much as digits as its factorization.

28219033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 28219033 is about 5312.1589772897. The cubic root of 28219033 is about 304.4486428827.

The spelling of 28219033 in words is "twenty-eight million, two hundred nineteen thousand, thirty-three".