19234423 has 4 divisors (see below), whose sum is σ = 20714008. Its totient is φ = 17754840.

The previous prime is 19234363. The next prime is 19234447. The reversal of 19234423 is 32443291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32443291 = 839 ⋅38669.

It is a cyclic number.

It is not a de Polignac number, because 19234423 - 2²¹ = 17137271 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19234391 and 19234400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19234483) 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, 739773 + ... + 739798.

It is an arithmetic number, because the mean of its divisors is an integer number (5178502).

Almost surely, 2^19234423 is an apocalyptic number.

19234423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

19234423 is a deficient number, since it is larger than the sum of its proper divisors (1479585).

19234423 is a wasteful number, since it uses less digits than its factorization.

19234423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479584.

The product of its digits is 5184, while the sum is 28.

The square root of 19234423 is about 4385.7066705378. The cubic root of 19234423 is about 267.9331115094.

The spelling of 19234423 in words is "nineteen million, two hundred thirty-four thousand, four hundred twenty-three".