19669342 has 32 divisors (see below), whose sum is σ = 36990720. Its totient is φ = 7620480.

The previous prime is 19669333. The next prime is 19669387. The reversal of 19669342 is 24396691.

It is a junction number, because it is equal to n+sod(n) for n = 19669295 and 19669304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51709 + ... + 52087.

It is an arithmetic number, because the mean of its divisors is an integer number (1155960).

Almost surely, 2^19669342 is an apocalyptic number.

19669342 is a deficient number, since it is larger than the sum of its proper divisors (17321378).

19669342 is a wasteful number, since it uses less digits than its factorization.

19669342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736.

The product of its digits is 69984, while the sum is 40.

The square root of 19669342 is about 4435.0131905103. The cubic root of 19669342 is about 269.9375347037.

The spelling of 19669342 in words is "nineteen million, six hundred sixty-nine thousand, three hundred forty-two".