12818445 has 32 divisors (see below), whose sum is σ = 22135680. Its totient is φ = 6312960.

The previous prime is 12818431. The next prime is 12818447. The reversal of 12818445 is 54481821.

12818445 = 332² + 333² + ... + 421².

It is not a de Polignac number, because 12818445 - 2⁸ = 12818189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12818447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11137 + ... + 12233.

It is an arithmetic number, because the mean of its divisors is an integer number (691740).

Almost surely, 2^12818445 is an apocalyptic number.

12818445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12818445 is a deficient number, since it is larger than the sum of its proper divisors (9317235).

12818445 is a wasteful number, since it uses less digits than its factorization.

12818445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165.

The product of its digits is 10240, while the sum is 33.

The square root of 12818445 is about 3580.2856031328. The cubic root of 12818445 is about 234.0337266019.

The spelling of 12818445 in words is "twelve million, eight hundred eighteen thousand, four hundred forty-five".