12776940 has 144 divisors (see below), whose sum is σ = 44029440. Its totient is φ = 3084480.

The previous prime is 12776921. The next prime is 12776941. The reversal of 12776940 is 4967721.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12776895 and 12776904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12776941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53341 + ... + 53579.

It is an arithmetic number, because the mean of its divisors is an integer number (305760).

Almost surely, 2^12776940 is an apocalyptic number.

12776940 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 12776940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22014720).

12776940 is an abundant number, since it is smaller than the sum of its proper divisors (31252500).

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

12776940 is a wasteful number, since it uses less digits than its factorization.

12776940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 12776940 is about 3574.4845782294. The cubic root of 12776940 is about 233.7808599290.

The spelling of 12776940 in words is "twelve million, seven hundred seventy-six thousand, nine hundred forty".