12456020 has 24 divisors (see below), whose sum is σ = 27535200. Its totient is φ = 4720032.

The previous prime is 12456011. The next prime is 12456023. The reversal of 12456020 is 2065421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12455983 and 12456001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12456023) 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, 16010 + ... + 16769.

It is an arithmetic number, because the mean of its divisors is an integer number (1147300).

Almost surely, 2^12456020 is an apocalyptic number.

12456020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12456020 is an abundant number, since it is smaller than the sum of its proper divisors (15079180).

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

12456020 is a wasteful number, since it uses less digits than its factorization.

12456020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32807 (or 32805 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12456020 is about 3529.3087141819. The cubic root of 12456020 is about 231.8069390701.

The spelling of 12456020 in words is "twelve million, four hundred fifty-six thousand, twenty".