12700000 has 72 divisors (see below), whose sum is σ = 31497984. Its totient is φ = 5040000.

The previous prime is 12699997. The next prime is 12700001. The reversal of 12700000 is 721.

It is a super-2 number, since 2×12700000² = 322580000000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 12700000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12700001) 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, 99937 + ... + 100063.

It is an arithmetic number, because the mean of its divisors is an integer number (437472).

Almost surely, 2^12700000 is an apocalyptic number.

12700000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12700000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15748992).

12700000 is an abundant number, since it is smaller than the sum of its proper divisors (18797984).

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

12700000 is an frugal number, since it uses more digits than its factorization.

12700000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 14, while the sum is 10.

The square root of 12700000 is about 3563.7059362411. The cubic root of 12700000 is about 233.3106553923.

Adding to 12700000 its reverse (721), we get a palindrome (12700721).

The spelling of 12700000 in words is "twelve million, seven hundred thousand".