12822520 has 16 divisors (see below), whose sum is σ = 28850760. Its totient is φ = 5128992.

The previous prime is 12822517. The next prime is 12822521. The reversal of 12822520 is 2522821.

It is a junction number, because it is equal to n+sod(n) for n = 12822491 and 12822500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12822521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160242 + ... + 160321.

Almost surely, 2^12822520 is an apocalyptic number.

12822520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12822520 is an abundant number, since it is smaller than the sum of its proper divisors (16028240).

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

12822520 is a wasteful number, since it uses less digits than its factorization.

12822520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320574 (or 320570 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 12822520 is about 3580.8546465893. The cubic root of 12822520 is about 234.0585238477.

The spelling of 12822520 in words is "twelve million, eight hundred twenty-two thousand, five hundred twenty".