19438212 has 24 divisors (see below), whose sum is σ = 45432576. Its totient is φ = 6468448.

The previous prime is 19438189. The next prime is 19438217. The reversal of 19438212 is 21283491.

It is a self number, because there is not a number n which added to its sum of digits gives 19438212.

It is not an unprimeable number, because it can be changed into a prime (19438217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9418 + ... + 11294.

It is an arithmetic number, because the mean of its divisors is an integer number (1893024).

Almost surely, 2^19438212 is an apocalyptic number.

19438212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19438212 is an abundant number, since it is smaller than the sum of its proper divisors (25994364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19438212 is a wasteful number, since it uses less digits than its factorization.

19438212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747 (or 2745 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 19438212 is about 4408.8787690296. The cubic root of 19438212 is about 268.8760409690.

The spelling of 19438212 in words is "nineteen million, four hundred thirty-eight thousand, two hundred twelve".