19220202 has 12 divisors (see below), whose sum is σ = 41643810. Its totient is φ = 6406728.

The previous prime is 19220161. The next prime is 19220213. The reversal of 19220202 is 20202291.

It can be written as a sum of positive squares in only one way, i.e., 11148921 + 8071281 = 3339^2 + 2841^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1067789 = 19220202 / (1 + 9 + 2 + 2 + 0 + 2 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 533877 + ... + 533912.

Almost surely, 2^19220202 is an apocalyptic number.

19220202 is an abundant number, since it is smaller than the sum of its proper divisors (22423608).

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

19220202 is a wasteful number, since it uses less digits than its factorization.

19220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067797 (or 1067794 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 19220202 is about 4384.0850812912. The cubic root of 19220202 is about 267.8670629774.

Adding to 19220202 its reverse (20202291), we get a palindrome (39422493).

The spelling of 19220202 in words is "nineteen million, two hundred twenty thousand, two hundred two".