1308716740 has 24 divisors (see below), whose sum is σ = 2751967512. Its totient is φ = 522789120.

The previous prime is 1308716719. The next prime is 1308716777. The reversal of 1308716740 is 476178031.

It can be written as a sum of positive squares in 4 ways, for example, as 210192004 + 1098524736 = 14498^2 + 33144^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1308716740.

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 7 ways as a sum of consecutive naturals, for example, 28081 + ... + 58360.

It is an arithmetic number, because the mean of its divisors is an integer number (114665313).

Almost surely, 2^1308716740 is an apocalyptic number.

1308716740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1308716740 is an abundant number, since it is smaller than the sum of its proper divisors (1443250772).

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

1308716740 is a wasteful number, since it uses less digits than its factorization.

1308716740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87207 (or 87205 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 1308716740 is about 36176.1902361208. The cubic root of 1308716740 is about 1093.8267814833.

The spelling of 1308716740 in words is "one billion, three hundred eight million, seven hundred sixteen thousand, seven hundred forty".