12700818 has 24 divisors (see below), whose sum is σ = 29635788. Its totient is φ = 3907872.

The previous prime is 12700817. The next prime is 12700823. The reversal of 12700818 is 81800721.

It can be written as a sum of positive squares in 2 ways, for example, as 10870209 + 1830609 = 3297^2 + 1353^2 .

It is a super-2 number, since 2×12700818² = 322621555738248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12700791 and 12700800.

It is not an unprimeable number, because it can be changed into a prime (12700817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26905 + ... + 27372.

Almost surely, 2^12700818 is an apocalyptic number.

12700818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12700818 is an abundant number, since it is smaller than the sum of its proper divisors (16934970).

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

12700818 is a wasteful number, since it uses less digits than its factorization.

12700818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54298 (or 54295 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 12700818 is about 3563.8207025607. The cubic root of 12700818 is about 233.3156644217.

It can be divided in two parts, 127008 and 18, that multiplied together give a square (2286144 = 1512²).

The spelling of 12700818 in words is "twelve million, seven hundred thousand, eight hundred eighteen".