19213228 has 6 divisors (see below), whose sum is σ = 33623156. Its totient is φ = 9606612.

The previous prime is 19213193. The next prime is 19213267. The reversal of 19213228 is 82231291.

It is a junction number, because it is equal to n+sod(n) for n = 19213196 and 19213205.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2401650 + ... + 2401657.

Almost surely, 2^19213228 is an apocalyptic number.

It is an amenable number.

19213228 is a deficient number, since it is larger than the sum of its proper divisors (14409928).

19213228 is a wasteful number, since it uses less digits than its factorization.

19213228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4803311 (or 4803309 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 19213228 is about 4383.2896322283. The cubic root of 19213228 is about 267.8346607704.

The spelling of 19213228 in words is "nineteen million, two hundred thirteen thousand, two hundred twenty-eight".