12776946 has 48 divisors (see below), whose sum is σ = 32022144. Its totient is φ = 3368736.

The previous prime is 12776941. The next prime is 12776957. The reversal of 12776946 is 64967721.

It is a Harshad number since it is a multiple of its sum of digits (42).

12776946 is a Rhonda number in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 12776898 and 12776907.

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 23 ways as a sum of consecutive naturals, for example, 2151 + ... + 5493.

It is an arithmetic number, because the mean of its divisors is an integer number (667128).

Almost surely, 2^12776946 is an apocalyptic number.

12776946 is the 1911-st nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12776946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16011072).

12776946 is an abundant number, since it is smaller than the sum of its proper divisors (19245198).

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

12776946 is a wasteful number, since it uses less digits than its factorization.

12776946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375 (or 3368 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The square root of 12776946 is about 3574.4854175112. The cubic root of 12776946 is about 233.7808965232.

The spelling of 12776946 in words is "twelve million, seven hundred seventy-six thousand, nine hundred forty-six".