1276340340 has 48 divisors (see below), whose sum is σ = 3898641600. Its totient is φ = 309415680.

The previous prime is 1276340327. The next prime is 1276340341. The reversal of 1276340340 is 430436721.

It is a super-2 number, since 2×1276340340² = 3258089327022631200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1276340298 and 1276340307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276340341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 966265 + ... + 967584.

It is an arithmetic number, because the mean of its divisors is an integer number (81221700).

Almost surely, 2^1276340340 is an apocalyptic number.

1276340340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1276340340 is an abundant number, since it is smaller than the sum of its proper divisors (2622301260).

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

1276340340 is a wasteful number, since it uses less digits than its factorization.

1276340340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933872 (or 1933870 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 1276340340 is about 35725.9057267972. The cubic root of 1276340340 is about 1084.7312833090.

The spelling of 1276340340 in words is "one billion, two hundred seventy-six million, three hundred forty thousand, three hundred forty".