1298568920 has 64 divisors (see below), whose sum is σ = 3290250240. Its totient is φ = 456969600.

The previous prime is 1298568893. The next prime is 1298568959. The reversal of 1298568920 is 298658921.

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, 33962 + ... + 61241.

It is an arithmetic number, because the mean of its divisors is an integer number (51410160).

Almost surely, 2^1298568920 is an apocalyptic number.

1298568920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1298568920 is an abundant number, since it is smaller than the sum of its proper divisors (1991681320).

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

1298568920 is a wasteful number, since it uses less digits than its factorization.

1298568920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95256 (or 95252 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 1298568920 is about 36035.6617810746. The cubic root of 1298568920 is about 1090.9922563954.

Subtracting from 1298568920 its reverse (298658921), we obtain a palindrome (999909999).

The spelling of 1298568920 in words is "one billion, two hundred ninety-eight million, five hundred sixty-eight thousand, nine hundred twenty".