1290561560 has 32 divisors (see below), whose sum is σ = 2916464400. Its totient is φ = 513966720.

The previous prime is 1290561553. The next prime is 1290561577. The reversal of 1290561560 is 651650921.

It is a self number, because there is not a number n which added to its sum of digits gives 1290561560.

It is a congruent number.

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, 61286 + ... + 79605.

Almost surely, 2^1290561560 is an apocalyptic number.

1290561560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1290561560 is an abundant number, since it is smaller than the sum of its proper divisors (1625902840).

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

1290561560 is a wasteful number, since it uses less digits than its factorization.

1290561560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141131 (or 141127 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 1290561560 is about 35924.3867031853. The cubic root of 1290561560 is about 1088.7451710147.

The spelling of 1290561560 in words is "one billion, two hundred ninety million, five hundred sixty-one thousand, five hundred sixty".