19221230 has 24 divisors (see below), whose sum is σ = 40247928. Its totient is φ = 6589968.

The previous prime is 19221227. The next prime is 19221233. The reversal of 19221230 is 3212291.

It is an interprime number because it is at equal distance from previous prime (19221227) and next prime (19221233).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19221233) 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 11 ways as a sum of consecutive naturals, for example, 19124 + ... + 20103.

It is an arithmetic number, because the mean of its divisors is an integer number (1676997).

Almost surely, 2^19221230 is an apocalyptic number.

19221230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19221230 is an abundant number, since it is smaller than the sum of its proper divisors (21026698).

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

19221230 is a wasteful number, since it uses less digits than its factorization.

19221230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39248 (or 39241 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 19221230 is about 4384.2023219737. The cubic root of 19221230 is about 267.8718385503.

The spelling of 19221230 in words is "nineteen million, two hundred twenty-one thousand, two hundred thirty".