1128706488 has 160 divisors (see below), whose sum is σ = 3891185760. Its totient is φ = 297665280.

The previous prime is 1128706463. The next prime is 1128706547. The reversal of 1128706488 is 8846078211.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 49398 + ... + 68538.

It is an arithmetic number, because the mean of its divisors is an integer number (24319911).

Almost surely, 2^1128706488 is an apocalyptic number.

1128706488 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 1128706488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1945592880).

1128706488 is an abundant number, since it is smaller than the sum of its proper divisors (2762479272).

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

1128706488 is a wasteful number, since it uses less digits than its factorization.

1128706488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19179 (or 19166 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 1128706488 is about 33596.2272881941. The cubic root of 1128706488 is about 1041.1828528801.

The spelling of 1128706488 in words is "one billion, one hundred twenty-eight million, seven hundred six thousand, four hundred eighty-eight".