19452223 has 6 divisors (see below), whose sum is σ = 22244456. Its totient is φ = 16663332.

The previous prime is 19452203. The next prime is 19452239. The reversal of 19452223 is 32225491.

It is a de Polignac number, because none of the positive numbers 2^k-19452223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19452191 and 19452200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19452203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10836 + ... + 12502.

Almost surely, 2^19452223 is an apocalyptic number.

19452223 is a deficient number, since it is larger than the sum of its proper divisors (2792233).

19452223 is an frugal number, since it uses more digits than its factorization.

19452223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341 (or 1674 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 19452223 is about 4410.4674355447. The cubic root of 19452223 is about 268.9406271123.

Multiplying 19452223 by its sum of digits (28), we get a square (544662244 = 23338²).

The spelling of 19452223 in words is "nineteen million, four hundred fifty-two thousand, two hundred twenty-three".