20872012 has 24 divisors (see below), whose sum is σ = 42336000. Its totient is φ = 8818320.

The previous prime is 20872003. The next prime is 20872031. The reversal of 20872012 is 21027802.

It is a super-3 number, since 3×20872012³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3262 + ... + 7237.

It is an arithmetic number, because the mean of its divisors is an integer number (1764000).

Almost surely, 2^20872012 is an apocalyptic number.

It is an amenable number.

20872012 is an abundant number, since it is smaller than the sum of its proper divisors (21463988).

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

20872012 is a wasteful number, since it uses less digits than its factorization.

20872012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10581 (or 10579 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 20872012 is about 4568.5897167507. The cubic root of 20872012 is about 275.3307843250.

Adding to 20872012 its reverse (21027802), we get a palindrome (41899814).

The spelling of 20872012 in words is "twenty million, eight hundred seventy-two thousand, twelve".