12770000 has 50 divisors (see below), whose sum is σ = 30941658. Its totient is φ = 5104000.

The previous prime is 12769993. The next prime is 12770053. The reversal of 12770000 is 7721.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 4032064 + 8737936 = 2008^2 + 2956^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 9362 + ... + 10638.

Almost surely, 2^12770000 is an apocalyptic number.

12770000 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 12770000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15470829).

12770000 is an abundant number, since it is smaller than the sum of its proper divisors (18171658).

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

12770000 is an equidigital number, since it uses as much as digits as its factorization.

12770000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 17.

The square root of 12770000 is about 3573.5136770411. The cubic root of 12770000 is about 233.7385249879.

Adding to 12770000 its reverse (7721), we get a palindrome (12777721).

The spelling of 12770000 in words is "twelve million, seven hundred seventy thousand".