12406020 has 48 divisors (see below), whose sum is σ = 37896768. Its totient is φ = 3007360.

The previous prime is 12406013. The next prime is 12406021. The reversal of 12406020 is 2060421.

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

It is not an unprimeable number, because it can be changed into a prime (12406021) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8739 + ... + 10058.

It is an arithmetic number, because the mean of its divisors is an integer number (789516).

Almost surely, 2^12406020 is an apocalyptic number.

12406020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12406020 is an abundant number, since it is smaller than the sum of its proper divisors (25490748).

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

12406020 is a wasteful number, since it uses less digits than its factorization.

12406020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18820 (or 18818 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 12406020 is about 3522.2180511717. The cubic root of 12406020 is about 231.4963559145.

Adding to 12406020 its reverse (2060421), we get a palindrome (14466441).

It can be divided in two parts, 1240 and 6020, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 12406020 in words is "twelve million, four hundred six thousand, twenty".