19678230 has 144 divisors (see below), whose sum is σ = 60999120. Its totient is φ = 4371840.

The previous prime is 19678229. The next prime is 19678247. The reversal of 19678230 is 3287691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 141501 + ... + 141639.

It is an arithmetic number, because the mean of its divisors is an integer number (423605).

Almost surely, 2^19678230 is an apocalyptic number.

19678230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19678230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30499560).

19678230 is an abundant number, since it is smaller than the sum of its proper divisors (41320890).

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

19678230 is a wasteful number, since it uses less digits than its factorization.

19678230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 19678230 is about 4436.0151036713. The cubic root of 19678230 is about 269.9781875383.

The spelling of 19678230 in words is "nineteen million, six hundred seventy-eight thousand, two hundred thirty".