1213024560 has 80 divisors (see below), whose sum is σ = 4102237440. Its totient is φ = 294065920.

The previous prime is 1213024541. The next prime is 1213024591. The reversal of 1213024560 is 654203121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1213024560.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227100 + ... + 232379.

It is an arithmetic number, because the mean of its divisors is an integer number (51277968).

Almost surely, 2^1213024560 is an apocalyptic number.

1213024560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213024560 is an abundant number, since it is smaller than the sum of its proper divisors (2889212880).

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

1213024560 is a wasteful number, since it uses less digits than its factorization.

1213024560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459506 (or 459500 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1213024560 is about 34828.5021211076. The cubic root of 1213024560 is about 1066.4893707060.

Adding to 1213024560 its reverse (654203121), we get a palindrome (1867227681).

The spelling of 1213024560 in words is "one billion, two hundred thirteen million, twenty-four thousand, five hundred sixty".