1227055648 has 144 divisors (see below), whose sum is σ = 3205269144. Its totient is φ = 456744960.

The previous prime is 1227055639. The next prime is 1227055651. The reversal of 1227055648 is 8465507221.

It can be written as a sum of positive squares in 4 ways, for example, as 964226704 + 262828944 = 31052^2 + 16212^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1227055648.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 344758 + ... + 348298.

Almost surely, 2^1227055648 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 1227055648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1602634572).

1227055648 is an abundant number, since it is smaller than the sum of its proper divisors (1978213496).

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

1227055648 is a wasteful number, since it uses less digits than its factorization.

1227055648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595 (or 3580 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 1227055648 is about 35029.3540905338. The cubic root of 1227055648 is about 1070.5856542924.

The spelling of 1227055648 in words is "one billion, two hundred twenty-seven million, fifty-five thousand, six hundred forty-eight".