12820722 has 16 divisors (see below), whose sum is σ = 26334912. Its totient is φ = 4158000.

The previous prime is 12820711. The next prime is 12820723. The reversal of 12820722 is 22702821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12820692 and 12820701.

It is not an unprimeable number, because it can be changed into a prime (12820723) 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 7 ways as a sum of consecutive naturals, for example, 28654 + ... + 29097.

It is an arithmetic number, because the mean of its divisors is an integer number (1645932).

Almost surely, 2^12820722 is an apocalyptic number.

12820722 is an abundant number, since it is smaller than the sum of its proper divisors (13514190).

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

12820722 is a wasteful number, since it uses less digits than its factorization.

12820722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57793.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 12820722 is about 3580.6035804037. The cubic root of 12820722 is about 234.0475832813.

The spelling of 12820722 in words is "twelve million, eight hundred twenty thousand, seven hundred twenty-two".