20494528 has 28 divisors (see below), whose sum is σ = 41076880. Its totient is φ = 10144512.

The previous prime is 20494519. The next prime is 20494543. The reversal of 20494528 is 82549402.

It is a junction number, because it is equal to n+sod(n) for n = 20494493 and 20494502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5038 + ... + 8146.

Almost surely, 2^20494528 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 20494528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20538440).

20494528 is an abundant number, since it is smaller than the sum of its proper divisors (20582352).

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

20494528 is a wasteful number, since it uses less digits than its factorization.

20494528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224 (or 3214 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 20494528 is about 4527.0882474279. The cubic root of 20494528 is about 273.6608302668.

The spelling of 20494528 in words is "twenty million, four hundred ninety-four thousand, five hundred twenty-eight".