19528428 has 48 divisors (see below), whose sum is σ = 48513920. Its totient is φ = 6096384.

The previous prime is 19528417. The next prime is 19528499. The reversal of 19528428 is 82482591.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21675 + ... + 22557.

Almost surely, 2^19528428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19528428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24256960).

19528428 is an abundant number, since it is smaller than the sum of its proper divisors (28985492).

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

19528428 is a wasteful number, since it uses less digits than its factorization.

19528428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 1004 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 19528428 is about 4419.0980980286. The cubic root of 19528428 is about 269.2913653579.

The spelling of 19528428 in words is "nineteen million, five hundred twenty-eight thousand, four hundred twenty-eight".