20284608 has 28 divisors (see below), whose sum is σ = 53670200. Its totient is φ = 6761472.

The previous prime is 20284603. The next prime is 20284639. The reversal of 20284608 is 80648202.

It is a happy number.

It is a super-2 number, since 2×20284608² = 822930643427328, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20284603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52633 + ... + 53016.

Almost surely, 2^20284608 is an apocalyptic number.

It is an amenable number.

20284608 is an abundant number, since it is smaller than the sum of its proper divisors (33385592).

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

20284608 is a wasteful number, since it uses less digits than its factorization.

20284608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105664 (or 105654 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 20284608 is about 4503.8436917815. The cubic root of 20284608 is about 272.7232768707.

The spelling of 20284608 in words is "twenty million, two hundred eighty-four thousand, six hundred eight".