1228485888 has 324 divisors, whose sum is σ = 4292547168. Its totient is φ = 330946560.

The previous prime is 1228485883. The next prime is 1228485899. The reversal of 1228485888 is 8885848221.

1228485888 is a `hidden beast` number, since 12 + 2 + 8 + 48 + 588 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228485883) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 5822103 + ... + 5822313.

Almost surely, 2^1228485888 is an apocalyptic number.

1228485888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228485888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2146273584).

1228485888 is an abundant number, since it is smaller than the sum of its proper divisors (3064061280).

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

1228485888 is a wasteful number, since it uses less digits than its factorization.

1228485888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 242 counting only the distinct ones).

The product of its digits is 2621440, while the sum is 54.

The square root of 1228485888 is about 35049.7630234500. The cubic root of 1228485888 is about 1071.0014463282.

The spelling of 1228485888 in words is "one billion, two hundred twenty-eight million, four hundred eighty-five thousand, eight hundred eighty-eight".