19434724 has 12 divisors (see below), whose sum is σ = 35489664. Its totient is φ = 9294824.

The previous prime is 19434721. The next prime is 19434733. The reversal of 19434724 is 42743491.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19434724.

It is not an unprimeable number, because it can be changed into a prime (19434721) 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, 105532 + ... + 105715.

It is an arithmetic number, because the mean of its divisors is an integer number (2957472).

Almost surely, 2^19434724 is an apocalyptic number.

It is an amenable number.

19434724 is a deficient number, since it is larger than the sum of its proper divisors (16054940).

19434724 is a wasteful number, since it uses less digits than its factorization.

19434724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211274 (or 211272 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 19434724 is about 4408.4831858588. The cubic root of 19434724 is about 268.8599576013.

The spelling of 19434724 in words is "nineteen million, four hundred thirty-four thousand, seven hundred twenty-four".