1276471872 has 420 divisors, whose sum is σ = 4319479296. Its totient is φ = 372003840.

The previous prime is 1276471831. The next prime is 1276471883. The reversal of 1276471872 is 2781746721.

Its product of digits (263424) is a multiple of the sum of its prime divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 27158953 + ... + 27158999.

Almost surely, 2^1276471872 is an apocalyptic number.

1276471872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1276471872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2159739648).

1276471872 is an abundant number, since it is smaller than the sum of its proper divisors (3043007424).

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

1276471872 is a wasteful number, since it uses less digits than its factorization.

1276471872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 96 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 1276471872 is about 35727.7465284336. The cubic root of 1276471872 is about 1084.7685440013.

The spelling of 1276471872 in words is "one billion, two hundred seventy-six million, four hundred seventy-one thousand, eight hundred seventy-two".