19828156 has 6 divisors (see below), whose sum is σ = 34699280. Its totient is φ = 9914076.

The previous prime is 19828097. The next prime is 19828169. The reversal of 19828156 is 65182891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2478516 + ... + 2478523.

Almost surely, 2^19828156 is an apocalyptic number.

It is an amenable number.

19828156 is a deficient number, since it is larger than the sum of its proper divisors (14871124).

19828156 is a wasteful number, since it uses less digits than its factorization.

19828156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4957043 (or 4957041 counting only the distinct ones).

The product of its digits is 34560, while the sum is 40.

The square root of 19828156 is about 4452.8817635325. The cubic root of 19828156 is about 270.6620970645.

The spelling of 19828156 in words is "nineteen million, eight hundred twenty-eight thousand, one hundred fifty-six".