20102080 has 28 divisors (see below), whose sum is σ = 47868840. Its totient is φ = 8040704.

The previous prime is 20102029. The next prime is 20102087. The reversal of 20102080 is 8020102.

It is a self number, because there is not a number n which added to its sum of digits gives 20102080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102087) 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, 31090 + ... + 31729.

Almost surely, 2^20102080 is an apocalyptic number.

20102080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102080 is an abundant number, since it is smaller than the sum of its proper divisors (27766760).

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

20102080 is an equidigital number, since it uses as much as digits as its factorization.

20102080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62836 (or 62826 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 20102080 is about 4483.5343201541. The cubic root of 20102080 is about 271.9027910993.

Adding to 20102080 its reverse (8020102), we get a palindrome (28122182).

The spelling of 20102080 in words is "twenty million, one hundred two thousand, eighty".