20416528 has 40 divisors (see below), whose sum is σ = 43407936. Its totient is φ = 9225600.

The previous prime is 20416457. The next prime is 20416549. The reversal of 20416528 is 82561402.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20416496 and 20416505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54550 + ... + 54922.

Almost surely, 2^20416528 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 20416528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21703968).

20416528 is an abundant number, since it is smaller than the sum of its proper divisors (22991408).

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

20416528 is a wasteful number, since it uses less digits than its factorization.

20416528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20416528 is about 4518.4652261581. The cubic root of 20416528 is about 273.3132141976.

The spelling of 20416528 in words is "twenty million, four hundred sixteen thousand, five hundred twenty-eight".