1228027608 has 128 divisors (see below), whose sum is σ = 3640800000. Its totient is φ = 382392576.

The previous prime is 1228027553. The next prime is 1228027621. The reversal of 1228027608 is 8067208221.

It is a happy number.

1228027608 is a `hidden beast` number, since 1 + 2 + 28 + 0 + 27 + 608 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297543 + ... + 301641.

It is an arithmetic number, because the mean of its divisors is an integer number (28443750).

Almost surely, 2^1228027608 is an apocalyptic number.

1228027608 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 1228027608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1820400000).

1228027608 is an abundant number, since it is smaller than the sum of its proper divisors (2412772392).

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

1228027608 is a wasteful number, since it uses less digits than its factorization.

1228027608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4206 (or 4196 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 1228027608 is about 35043.2248516029. The cubic root of 1228027608 is about 1070.8682526702.

The spelling of 1228027608 in words is "one billion, two hundred twenty-eight million, twenty-seven thousand, six hundred eight".