19394426 has 8 divisors (see below), whose sum is σ = 29220480. Its totient is φ = 9654268.

The previous prime is 19394413. The next prime is 19394429. The reversal of 19394426 is 62449391.

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

It is a super-2 number, since 2×19394426² = 752287519738952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19394426.

It is not an unprimeable number, because it can be changed into a prime (19394429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20906 + ... + 21813.

It is an arithmetic number, because the mean of its divisors is an integer number (3652560).

Almost surely, 2^19394426 is an apocalyptic number.

19394426 is a deficient number, since it is larger than the sum of its proper divisors (9826054).

19394426 is a wasteful number, since it uses less digits than its factorization.

19394426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42948.

The product of its digits is 46656, while the sum is 38.

The square root of 19394426 is about 4403.9103078968. The cubic root of 19394426 is about 268.6740015142.

The spelling of 19394426 in words is "nineteen million, three hundred ninety-four thousand, four hundred twenty-six".