19434812 has 6 divisors (see below), whose sum is σ = 34010928. Its totient is φ = 9717404.

The previous prime is 19434797. The next prime is 19434817. The reversal of 19434812 is 21843491.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19434817) by changing a digit.

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 as a sum of consecutive naturals, namely, 2429348 + ... + 2429355.

It is an arithmetic number, because the mean of its divisors is an integer number (5668488).

Almost surely, 2^19434812 is an apocalyptic number.

It is an amenable number.

19434812 is a deficient number, since it is larger than the sum of its proper divisors (14576116).

19434812 is a wasteful number, since it uses less digits than its factorization.

19434812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4858707 (or 4858705 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 19434812 is about 4408.4931666047. The cubic root of 19434812 is about 268.8603633980.

The spelling of 19434812 in words is "nineteen million, four hundred thirty-four thousand, eight hundred twelve".