19419424 has 12 divisors (see below), whose sum is σ = 38232054. Its totient is φ = 9709696.

The previous prime is 19419419. The next prime is 19419431. The reversal of 19419424 is 42491491.

It can be written as a sum of positive squares in only one way, i.e., 9809424 + 9610000 = 3132^2 + 3100^2 .

It is a super-2 number, since 2×19419424² = 754228056983552, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 19419424.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303397 + ... + 303460.

Almost surely, 2^19419424 is an apocalyptic number.

It is an amenable number.

19419424 is a deficient number, since it is larger than the sum of its proper divisors (18812630).

19419424 is an equidigital number, since it uses as much as digits as its factorization.

19419424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606867 (or 606859 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 19419424 is about 4406.7475534684. The cubic root of 19419424 is about 268.7893856825.

The spelling of 19419424 in words is "nineteen million, four hundred nineteen thousand, four hundred twenty-four".