19982426 has 8 divisors (see below), whose sum is σ = 30611520. Its totient is φ = 9778588.

The previous prime is 19982407. The next prime is 19982437. The reversal of 19982426 is 62428991.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 106196 + ... + 106383.

It is an arithmetic number, because the mean of its divisors is an integer number (3826440).

Almost surely, 2^19982426 is an apocalyptic number.

19982426 is a deficient number, since it is larger than the sum of its proper divisors (10629094).

19982426 is a wasteful number, since it uses less digits than its factorization.

19982426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212628.

The product of its digits is 62208, while the sum is 41.

The square root of 19982426 is about 4470.1706902533. The cubic root of 19982426 is about 271.3622330690.

The spelling of 19982426 in words is "nineteen million, nine hundred eighty-two thousand, four hundred twenty-six".