19828158 has 64 divisors (see below), whose sum is σ = 47566848. Its totient is φ = 5391360.

The previous prime is 19828097. The next prime is 19828169. The reversal of 19828158 is 85182891.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126216 + ... + 126372.

It is an arithmetic number, because the mean of its divisors is an integer number (743232).

Almost surely, 2^19828158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19828158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23783424).

19828158 is an abundant number, since it is smaller than the sum of its proper divisors (27738690).

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

19828158 is a wasteful number, since it uses less digits than its factorization.

19828158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297.

The product of its digits is 46080, while the sum is 42.

The square root of 19828158 is about 4452.8819881061. The cubic root of 19828158 is about 270.6621061648.

The spelling of 19828158 in words is "nineteen million, eight hundred twenty-eight thousand, one hundred fifty-eight".