1122655128 has 192 divisors, whose sum is σ = 3436680960. Its totient is φ = 299296512.

The previous prime is 1122655087. The next prime is 1122655141. The reversal of 1122655128 is 8215562211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6489250 + ... + 6489422.

It is an arithmetic number, because the mean of its divisors is an integer number (17899380).

Almost surely, 2^1122655128 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 1122655128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1718340480).

1122655128 is an abundant number, since it is smaller than the sum of its proper divisors (2314025832).

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

1122655128 is a wasteful number, since it uses less digits than its factorization.

1122655128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 311 counting only the distinct ones).

The product of its digits is 9600, while the sum is 33.

The square root of 1122655128 is about 33506.0461409579. The cubic root of 1122655128 is about 1039.3188118164.

The spelling of 1122655128 in words is "one billion, one hundred twenty-two million, six hundred fifty-five thousand, one hundred twenty-eight".