19831228 has 12 divisors (see below), whose sum is σ = 34744192. Its totient is φ = 9904320.

The previous prime is 19831219. The next prime is 19831237. The reversal of 19831228 is 82213891.

It is an interprime number because it is at equal distance from previous prime (19831219) and next prime (19831237).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 19831193 and 19831202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2068 + ... + 6628.

Almost surely, 2^19831228 is an apocalyptic number.

It is an amenable number.

19831228 is a deficient number, since it is larger than the sum of its proper divisors (14912964).

19831228 is a wasteful number, since it uses less digits than its factorization.

19831228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5652 (or 5650 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 19831228 is about 4453.2266953300. The cubic root of 19831228 is about 270.6760743439.

The spelling of 19831228 in words is "nineteen million, eight hundred thirty-one thousand, two hundred twenty-eight".