12902020 has 24 divisors (see below), whose sum is σ = 27468504. Its totient is φ = 5089536.

The previous prime is 12901981. The next prime is 12902033. The reversal of 12902020 is 2020921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5837056 + 7064964 = 2416^2 + 2658^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12901985 and 12902003.

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 7 ways as a sum of consecutive naturals, for example, 2959 + ... + 5878.

It is an arithmetic number, because the mean of its divisors is an integer number (1144521).

Almost surely, 2^12902020 is an apocalyptic number.

12902020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12902020 is an abundant number, since it is smaller than the sum of its proper divisors (14566484).

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

12902020 is a wasteful number, since it uses less digits than its factorization.

12902020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8919 (or 8917 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 12902020 is about 3591.9381954594. The cubic root of 12902020 is about 234.5412508147.

Adding to 12902020 its reverse (2020921), we get a palindrome (14922941).

The spelling of 12902020 in words is "twelve million, nine hundred two thousand, twenty".