1271082620 has 48 divisors (see below), whose sum is σ = 2721180000. Its totient is φ = 498597120.

The previous prime is 1271082619. The next prime is 1271082713. The reversal of 1271082620 is 262801721.

It is a congruent number.

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, 461006 + ... + 463754.

It is an arithmetic number, because the mean of its divisors is an integer number (56691250).

Almost surely, 2^1271082620 is an apocalyptic number.

1271082620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1271082620 is an abundant number, since it is smaller than the sum of its proper divisors (1450097380).

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

1271082620 is a wasteful number, since it uses less digits than its factorization.

1271082620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198 (or 3196 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 1271082620 is about 35652.2456515715. The cubic root of 1271082620 is about 1083.2397630163.

The spelling of 1271082620 in words is "one billion, two hundred seventy-one million, eighty-two thousand, six hundred twenty".