12776456 has 48 divisors (see below), whose sum is σ = 30410640. Its totient is φ = 4976160.

The previous prime is 12776453. The next prime is 12776459. The reversal of 12776456 is 65467721.

It is an interprime number because it is at equal distance from previous prime (12776453) and next prime (12776459).

It is not an unprimeable number, because it can be changed into a prime (12776453) 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, 2831 + ... + 5793.

It is an arithmetic number, because the mean of its divisors is an integer number (633555).

Almost surely, 2^12776456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12776456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15205320).

12776456 is an abundant number, since it is smaller than the sum of its proper divisors (17634184).

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

12776456 is a wasteful number, since it uses less digits than its factorization.

12776456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994 (or 2983 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 12776456 is about 3574.4168755197. The cubic root of 12776456 is about 233.7779079607. Note that the first 3 decimals are identical.

The spelling of 12776456 in words is "twelve million, seven hundred seventy-six thousand, four hundred fifty-six".