20212080 has 160 divisors (see below), whose sum is σ = 73281024. Its totient is φ = 4512768.

The previous prime is 20212079. The next prime is 20212097. The reversal of 20212080 is 8021202.

20212080 = T₁₈₉ + T₁₉₀ + ... + T₅₀₃.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 88927 + ... + 89153.

Almost surely, 2^20212080 is an apocalyptic number.

20212080 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 20212080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36640512).

20212080 is an abundant number, since it is smaller than the sum of its proper divisors (53068944).

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

20212080 is a wasteful number, since it uses less digits than its factorization.

20212080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 20212080 is about 4495.7846923535. The cubic root of 20212080 is about 272.3978462874.

Adding to 20212080 its reverse (8021202), we get a palindrome (28233282).

The spelling of 20212080 in words is "twenty million, two hundred twelve thousand, eighty".