20630080 has 56 divisors (see below), whose sum is σ = 51279552. Its totient is φ = 7890432.

The previous prime is 20630069. The next prime is 20630083. The reversal of 20630080 is 8003602.

It is not an unprimeable number, because it can be changed into a prime (20630083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5959 + ... + 8761.

Almost surely, 2^20630080 is an apocalyptic number.

20630080 is a gapful number since it is divisible by the number (20) 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 20630080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25639776).

20630080 is an abundant number, since it is smaller than the sum of its proper divisors (30649472).

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

20630080 is a wasteful number, since it uses less digits than its factorization.

20630080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843 (or 2833 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20630080 is about 4542.0347863045. The cubic root of 20630080 is about 274.2628411813.

Adding to 20630080 its reverse (8003602), we get a palindrome (28633682).

The spelling of 20630080 in words is "twenty million, six hundred thirty thousand, eighty".