1297516020 has 48 divisors (see below), whose sum is σ = 3791007360. Its totient is φ = 330960256.

The previous prime is 1297516001. The next prime is 1297516021. The reversal of 1297516020 is 206157921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297516021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468735 + ... + 471494.

It is an arithmetic number, because the mean of its divisors is an integer number (78979320).

Almost surely, 2^1297516020 is an apocalyptic number.

1297516020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1297516020 is an abundant number, since it is smaller than the sum of its proper divisors (2493491340).

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

1297516020 is a wasteful number, since it uses less digits than its factorization.

1297516020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940264 (or 940262 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 1297516020 is about 36021.0496793195. The cubic root of 1297516020 is about 1090.6973121349.

The spelling of 1297516020 in words is "one billion, two hundred ninety-seven million, five hundred sixteen thousand, twenty".