1262982240 has 384 divisors, whose sum is σ = 4880494080. Its totient is φ = 303077376.

The previous prime is 1262982239. The next prime is 1262982257. The reversal of 1262982240 is 422892621.

1262982240 is a `hidden beast` number, since 1 + 2 + 629 + 8 + 2 + 24 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1262982195 and 1262982204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2414619 + ... + 2415141.

It is an arithmetic number, because the mean of its divisors is an integer number (12709620).

Almost surely, 2^1262982240 is an apocalyptic number.

1262982240 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 1262982240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2440247040).

1262982240 is an abundant number, since it is smaller than the sum of its proper divisors (3617511840).

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

1262982240 is a wasteful number, since it uses less digits than its factorization.

1262982240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1262982240 is about 35538.4614185814. The cubic root of 1262982240 is about 1080.9337603460.

The spelling of 1262982240 in words is "one billion, two hundred sixty-two million, nine hundred eighty-two thousand, two hundred forty".