1303266240 has 448 divisors, whose sum is σ = 5135270400. Its totient is φ = 309215232.

The previous prime is 1303266203. The next prime is 1303266241. The reversal of 1303266240 is 426623031.

1303266240 is a `hidden beast` number, since 1 + 3 + 0 + 32 + 6 + 624 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303266241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2790487 + ... + 2790953.

Almost surely, 2^1303266240 is an apocalyptic number.

1303266240 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 1303266240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2567635200).

1303266240 is an abundant number, since it is smaller than the sum of its proper divisors (3832004160).

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

1303266240 is a wasteful number, since it uses less digits than its factorization.

1303266240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 1303266240 is about 36100.7789389647. The cubic root of 1303266240 is about 1092.3061573639.

Adding to 1303266240 its reverse (426623031), we get a palindrome (1729889271).

The spelling of 1303266240 in words is "one billion, three hundred three million, two hundred sixty-six thousand, two hundred forty".