20026816 has 56 divisors (see below), whose sum is σ = 42793920. Its totient is φ = 9265152.

The previous prime is 20026801. The next prime is 20026829. The reversal of 20026816 is 61862002.

It is a congruent number.

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, 85836 + ... + 86068.

Almost surely, 2^20026816 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 20026816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21396960).

20026816 is an abundant number, since it is smaller than the sum of its proper divisors (22767104).

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

20026816 is a wasteful number, since it uses less digits than its factorization.

20026816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20026816 is about 4475.1330706472. The cubic root of 20026816 is about 271.5630238509.

Adding to 20026816 its reverse (61862002), we get a palindrome (81888818).

The spelling of 20026816 in words is "twenty million, twenty-six thousand, eight hundred sixteen".