20051080 has 64 divisors (see below), whose sum is σ = 54288000. Its totient is φ = 6511104.

The previous prime is 20051071. The next prime is 20051081. The reversal of 20051080 is 8015002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20051081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3436 + ... + 7204.

It is an arithmetic number, because the mean of its divisors is an integer number (848250).

Almost surely, 2^20051080 is an apocalyptic number.

20051080 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 20051080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27144000).

20051080 is an abundant number, since it is smaller than the sum of its proper divisors (34236920).

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

20051080 is a wasteful number, since it uses less digits than its factorization.

20051080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3806 (or 3802 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 20051080 is about 4477.8432308423. The cubic root of 20051080 is about 271.6726526255.

Adding to 20051080 its reverse (8015002), we get a palindrome (28066082).

The spelling of 20051080 in words is "twenty million, fifty-one thousand, eighty".