19434436 has 12 divisors (see below), whose sum is σ = 38868928. Its totient is φ = 8329032.

The previous prime is 19434433. The next prime is 19434439. The reversal of 19434436 is 63443491.

It is an interprime number because it is at equal distance from previous prime (19434433) and next prime (19434439).

19434436 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (19434431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347016 + ... + 347071.

Almost surely, 2^19434436 is an apocalyptic number.

It is an amenable number.

19434436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19434436 is a wasteful number, since it uses less digits than its factorization.

19434436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694098 (or 694096 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 19434436 is about 4408.4505214417. The cubic root of 19434436 is about 268.8586295308.

The spelling of 19434436 in words is "nineteen million, four hundred thirty-four thousand, four hundred thirty-six".