1276823040 has 240 divisors, whose sum is σ = 4242143664. Its totient is φ = 327598080.

The previous prime is 1276823027. The next prime is 1276823077. The reversal of 1276823040 is 403286721.

It is a tau number, because it is divible by the number of its divisors (240).

It is a junction number, because it is equal to n+sod(n) for n = 1276822992 and 1276823010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7380394 + ... + 7380566.

Almost surely, 2^1276823040 is an apocalyptic number.

1276823040 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 1276823040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2121071832).

1276823040 is an abundant number, since it is smaller than the sum of its proper divisors (2965320624).

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

1276823040 is an equidigital number, since it uses as much as digits as its factorization.

1276823040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 1276823040 is about 35732.6606901865. The cubic root of 1276823040 is about 1084.8680111553.

The spelling of 1276823040 in words is "one billion, two hundred seventy-six million, eight hundred twenty-three thousand, forty".