19428323 has 2 divisors, whose sum is σ = 19428324. Its totient is φ = 19428322.

The previous prime is 19428319. The next prime is 19428341. The reversal of 19428323 is 32382491.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19428323 - 2² = 19428319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19428323.

It is not a weakly prime, because it can be changed into another prime (19428313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9714161 + 9714162.

It is an arithmetic number, because the mean of its divisors is an integer number (9714162).

Almost surely, 2^19428323 is an apocalyptic number.

19428323 is a deficient number, since it is larger than the sum of its proper divisors (1).

19428323 is an equidigital number, since it uses as much as digits as its factorization.

19428323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 19428323 is about 4407.7571394078. The cubic root of 19428323 is about 268.8304372170.

The spelling of 19428323 in words is "nineteen million, four hundred twenty-eight thousand, three hundred twenty-three".