19406834 has 8 divisors (see below), whose sum is σ = 29238060. Its totient is φ = 9660816.

The previous prime is 19406813. The next prime is 19406839. The reversal of 19406834 is 43860491.

It can be written as a sum of positive squares in 2 ways, for example, as 19404025 + 2809 = 4405^2 + 53^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 19406794 and 19406803.

It is not an unprimeable number, because it can be changed into a prime (19406839) 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, 20729 + ... + 21644.

Almost surely, 2^19406834 is an apocalyptic number.

19406834 is a deficient number, since it is larger than the sum of its proper divisors (9831226).

19406834 is a wasteful number, since it uses less digits than its factorization.

19406834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42604.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 19406834 is about 4405.3188306864. The cubic root of 19406834 is about 268.7312859513.

The spelling of 19406834 in words is "nineteen million, four hundred six thousand, eight hundred thirty-four".