19198224 has 30 divisors (see below), whose sum is σ = 53728766. Its totient is φ = 6399360.

The previous prime is 19198217. The next prime is 19198229. The reversal of 19198224 is 42289191.

It can be written as a sum of positive squares in only one way, i.e., 18662400 + 535824 = 4320^2 + 732^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (19198229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66517 + ... + 66804.

Almost surely, 2^19198224 is an apocalyptic number.

It is an amenable number.

19198224 is an abundant number, since it is smaller than the sum of its proper divisors (34530542).

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

19198224 is a wasteful number, since it uses less digits than its factorization.

19198224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133335 (or 133326 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 19198224 is about 4381.5777980084. The cubic root of 19198224 is about 267.7649234386.

The spelling of 19198224 in words is "nineteen million, one hundred ninety-eight thousand, two hundred twenty-four".