12872020 has 24 divisors (see below), whose sum is σ = 30893184. Its totient is φ = 4413216.

The previous prime is 12872003. The next prime is 12872021. The reversal of 12872020 is 2027821.

It is a junction number, because it is equal to n+sod(n) for n = 12871982 and 12872000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12872021) 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, 45832 + ... + 46111.

It is an arithmetic number, because the mean of its divisors is an integer number (1287216).

Almost surely, 2^12872020 is an apocalyptic number.

12872020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12872020 is an abundant number, since it is smaller than the sum of its proper divisors (18021164).

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

12872020 is a wasteful number, since it uses less digits than its factorization.

12872020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91959 (or 91957 counting only the distinct ones).

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

The square root of 12872020 is about 3587.7597466943. The cubic root of 12872020 is about 234.3593232774.

Adding to 12872020 its reverse (2027821), we get a palindrome (14899841).

The spelling of 12872020 in words is "twelve million, eight hundred seventy-two thousand, twenty".