1300505240 has 32 divisors (see below), whose sum is σ = 2997509760. Its totient is φ = 507513600.

The previous prime is 1300505231. The next prime is 1300505257. The reversal of 1300505240 is 425050031.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394856 + ... + 398135.

It is an arithmetic number, because the mean of its divisors is an integer number (93672180).

Almost surely, 2^1300505240 is an apocalyptic number.

1300505240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1300505240 is an abundant number, since it is smaller than the sum of its proper divisors (1697004520).

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

1300505240 is a wasteful number, since it uses less digits than its factorization.

1300505240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793043 (or 793039 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1300505240 is about 36062.5184921963. The cubic root of 1300505240 is about 1091.5342532971.

Adding to 1300505240 its reverse (425050031), we get a palindrome (1725555271).

The spelling of 1300505240 in words is "one billion, three hundred million, five hundred five thousand, two hundred forty".