1273822340 has 48 divisors (see below), whose sum is σ = 3190102272. Its totient is φ = 417749376.

The previous prime is 1273822279. The next prime is 1273822369. The reversal of 1273822340 is 432283721.

It is a junction number, because it is equal to n+sod(n) for n = 1273822297 and 1273822306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194579 + ... + 201018.

It is an arithmetic number, because the mean of its divisors is an integer number (66460464).

Almost surely, 2^1273822340 is an apocalyptic number.

1273822340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1273822340 is an abundant number, since it is smaller than the sum of its proper divisors (1916279932).

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

1273822340 is a wasteful number, since it uses less digits than its factorization.

1273822340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395636 (or 395634 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1273822340 is about 35690.6477946254. The cubic root of 1273822340 is about 1084.0174842748.

The spelling of 1273822340 in words is "one billion, two hundred seventy-three million, eight hundred twenty-two thousand, three hundred forty".