19430936 has 32 divisors (see below), whose sum is σ = 41783040. Its totient is φ = 8298528.

The previous prime is 19430923. The next prime is 19430947. The reversal of 19430936 is 63903491.

It is a super-2 number, since 2×19430936² = 755122547672192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19430896 and 19430905.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 25781 + ... + 26523.

It is an arithmetic number, because the mean of its divisors is an integer number (1305720).

Almost surely, 2^19430936 is an apocalyptic number.

It is an amenable number.

19430936 is an abundant number, since it is smaller than the sum of its proper divisors (22352104).

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

19430936 is a wasteful number, since it uses less digits than its factorization.

19430936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 19430936 is about 4408.0535386948. The cubic root of 19430936 is about 268.8424887366.

The spelling of 19430936 in words is "nineteen million, four hundred thirty thousand, nine hundred thirty-six".