1227898568 has 36 divisors (see below), whose sum is σ = 2495652435. Its totient is φ = 566127744.

The previous prime is 1227898537. The next prime is 1227898571. The reversal of 1227898568 is 8658987221.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 114875524 + 1113023044 = 10718^2 + 33362^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=24778.

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 1287980 + ... + 1288932.

Almost surely, 2^1227898568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1227898568

1227898568 is an abundant number, since it is smaller than the sum of its proper divisors (1267753867).

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

1227898568 is an frugal number, since it uses more digits than its factorization.

1227898568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938 (or 968 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 56.

The square root of 1227898568 is about 35041.3836484805. The cubic root of 1227898568 is about 1070.8307427426.

The spelling of 1227898568 in words is "one billion, two hundred twenty-seven million, eight hundred ninety-eight thousand, five hundred sixty-eight".