1306687628 has 12 divisors (see below), whose sum is σ = 2287133352. Its totient is φ = 653220960.

The previous prime is 1306687583. The next prime is 1306687639. The reversal of 1306687628 is 8267866031.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4250 + ... + 51297.

It is an arithmetic number, because the mean of its divisors is an integer number (190594446).

Almost surely, 2^1306687628 is an apocalyptic number.

It is an amenable number.

1306687628 is a deficient number, since it is larger than the sum of its proper divisors (980445724).

1306687628 is a wasteful number, since it uses less digits than its factorization.

1306687628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61432 (or 61430 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 1306687628 is about 36148.1345023502. The cubic root of 1306687628 is about 1093.2611777766.

The spelling of 1306687628 in words is "one billion, three hundred six million, six hundred eighty-seven thousand, six hundred twenty-eight".