1276325040 has 80 divisors (see below), whose sum is σ = 3965031936. Its totient is φ = 339628800.

The previous prime is 1276325023. The next prime is 1276325047. The reversal of 1276325040 is 405236721.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1276324989 and 1276325007.

It is not an unprimeable number, because it can be changed into a prime (1276325047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112425 + ... + 123255.

Almost surely, 2^1276325040 is an apocalyptic number.

1276325040 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 1276325040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1982515968).

1276325040 is an abundant number, since it is smaller than the sum of its proper divisors (2688706896).

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

1276325040 is a wasteful number, since it uses less digits than its factorization.

1276325040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11338 (or 11332 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 1276325040 is about 35725.6915958250. The cubic root of 1276325040 is about 1084.7269489230.

The spelling of 1276325040 in words is "one billion, two hundred seventy-six million, three hundred twenty-five thousand, forty".