20226528 has 144 divisors (see below), whose sum is σ = 67092480. Its totient is φ = 5660928.

The previous prime is 20226517. The next prime is 20226529. The reversal of 20226528 is 82562202.

20226528 is a `hidden beast` number, since 2 + 0 + 2 + 2 + 652 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×20226528² = 818224869869568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20226529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159201 + ... + 159327.

It is an arithmetic number, because the mean of its divisors is an integer number (465920).

Almost surely, 2^20226528 is an apocalyptic number.

20226528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20226528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33546240).

20226528 is an abundant number, since it is smaller than the sum of its proper divisors (46865952).

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

20226528 is a wasteful number, since it uses less digits than its factorization.

20226528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20226528 is about 4497.3912438212. The cubic root of 20226528 is about 272.4627359756.

The spelling of 20226528 in words is "twenty million, two hundred twenty-six thousand, five hundred twenty-eight".