19928033 has 2 divisors, whose sum is σ = 19928034. Its totient is φ = 19928032.

The previous prime is 19928023. The next prime is 19928039. The reversal of 19928033 is 33082991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10975969 + 8952064 = 3313^2 + 2992^2 .

It is a cyclic number.

It is not a de Polignac number, because 19928033 - 2⁶ = 19927969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19927984 and 19928002.

It is not a weakly prime, because it can be changed into another prime (19928039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9964016 + 9964017.

It is an arithmetic number, because the mean of its divisors is an integer number (9964017).

Almost surely, 2^19928033 is an apocalyptic number.

It is an amenable number.

19928033 is a deficient number, since it is larger than the sum of its proper divisors (1).

19928033 is an equidigital number, since it uses as much as digits as its factorization.

19928033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 19928033 is about 4464.0825485199. The cubic root of 19928033 is about 271.1157895380.

The spelling of 19928033 in words is "nineteen million, nine hundred twenty-eight thousand, thirty-three".