19428329 has 4 divisors (see below), whose sum is σ = 19530240. Its totient is φ = 19326420.

The previous prime is 19428323. The next prime is 19428341. The reversal of 19428329 is 92382491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19428329 - 2⁴ = 19428313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19428292 and 19428301.

It is not an unprimeable number, because it can be changed into a prime (19428323) 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 in 3 ways as a sum of consecutive naturals, for example, 50669 + ... + 51050.

It is an arithmetic number, because the mean of its divisors is an integer number (4882560).

Almost surely, 2^19428329 is an apocalyptic number.

It is an amenable number.

19428329 is a deficient number, since it is larger than the sum of its proper divisors (101911).

19428329 is a wasteful number, since it uses less digits than its factorization.

19428329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101910.

The product of its digits is 31104, while the sum is 38.

The square root of 19428329 is about 4407.7578200260. The cubic root of 19428329 is about 268.8304648911.

The spelling of 19428329 in words is "nineteen million, four hundred twenty-eight thousand, three hundred twenty-nine".