1276605852 has 12 divisors (see below), whose sum is σ = 2978747016. Its totient is φ = 425535280.

The previous prime is 1276605809. The next prime is 1276605853. The reversal of 1276605852 is 2585066721.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276605853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53191899 + ... + 53191922.

It is an arithmetic number, because the mean of its divisors is an integer number (248228918).

Almost surely, 2^1276605852 is an apocalyptic number.

1276605852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1276605852 is an abundant number, since it is smaller than the sum of its proper divisors (1702141164).

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

1276605852 is a wasteful number, since it uses less digits than its factorization.

1276605852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106383828 (or 106383826 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 1276605852 is about 35729.6214925375. The cubic root of 1276605852 is about 1084.8064955374.

The spelling of 1276605852 in words is "one billion, two hundred seventy-six million, six hundred five thousand, eight hundred fifty-two".