19428528 has 80 divisors (see below), whose sum is σ = 58496256. Its totient is φ = 5441280.

The previous prime is 19428517. The next prime is 19428533. The reversal of 19428528 is 82582491.

It is a congruent number.

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, 17263 + ... + 18353.

Almost surely, 2^19428528 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 19428528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29248128).

19428528 is an abundant number, since it is smaller than the sum of its proper divisors (39067728).

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

19428528 is a wasteful number, since it uses less digits than its factorization.

19428528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162 (or 1156 counting only the distinct ones).

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

The square root of 19428528 is about 4407.7803938037. The cubic root of 19428528 is about 268.8313827446.

The spelling of 19428528 in words is "nineteen million, four hundred twenty-eight thousand, five hundred twenty-eight".