1296716500 has 48 divisors (see below), whose sum is σ = 2836753920. Its totient is φ = 517821600.

The previous prime is 1296716461. The next prime is 1296716567. The reversal of 1296716500 is 56176921.

It is a self number, because there is not a number n which added to its sum of digits gives 1296716500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357697 + ... + 361303.

It is an arithmetic number, because the mean of its divisors is an integer number (59099040).

Almost surely, 2^1296716500 is an apocalyptic number.

1296716500 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 1296716500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1418376960).

1296716500 is an abundant number, since it is smaller than the sum of its proper divisors (1540037420).

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

1296716500 is a wasteful number, since it uses less digits than its factorization.

1296716500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4345 (or 4333 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1296716500 is about 36009.9500138503. The cubic root of 1296716500 is about 1090.4732395026.

The spelling of 1296716500 in words is "one billion, two hundred ninety-six million, seven hundred sixteen thousand, five hundred".