1306257050 has 144 divisors (see below), whose sum is σ = 3039716160. Its totient is φ = 407577600.

The previous prime is 1306257047. The next prime is 1306257079. The reversal of 1306257050 is 507526031.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 21414020 + ... + 21414080.

It is an arithmetic number, because the mean of its divisors is an integer number (21109140).

Almost surely, 2^1306257050 is an apocalyptic number.

1306257050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1306257050 is an abundant number, since it is smaller than the sum of its proper divisors (1733459110).

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

1306257050 is a wasteful number, since it uses less digits than its factorization.

1306257050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 1306257050 is about 36142.1782686102. The cubic root of 1306257050 is about 1093.1410812527.

The spelling of 1306257050 in words is "one billion, three hundred six million, two hundred fifty-seven thousand, fifty".