1276534080 has 280 divisors, whose sum is σ = 4809625128. Its totient is φ = 320274432.

The previous prime is 1276534009. The next prime is 1276534087. The reversal of 1276534080 is 804356721.

It can be written as a sum of positive squares in 4 ways, for example, as 77158656 + 1199375424 = 8784^2 + 34632^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276534087) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 439192 + ... + 442088.

Almost surely, 2^1276534080 is an apocalyptic number.

1276534080 is a gapful number since it is divisible by the number (10) 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 1276534080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2404812564).

1276534080 is an abundant number, since it is smaller than the sum of its proper divisors (3533091048).

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

1276534080 is a wasteful number, since it uses less digits than its factorization.

1276534080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2943 (or 2924 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1276534080 is about 35728.6171017015. The cubic root of 1276534080 is about 1084.7861655374.

The spelling of 1276534080 in words is "one billion, two hundred seventy-six million, five hundred thirty-four thousand, eighty".