1128908460 has 96 divisors (see below), whose sum is σ = 3397040640. Its totient is φ = 279088128.

The previous prime is 1128908453. The next prime is 1128908479. The reversal of 1128908460 is 648098211.

It is a super-2 number, since 2×1128908460² = 2548868622119143200, which contains 22 as substring.

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, 60081 + ... + 76599.

It is an arithmetic number, because the mean of its divisors is an integer number (35385840).

Almost surely, 2^1128908460 is an apocalyptic number.

1128908460 is a gapful number since it is divisible by the number (10) 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 1128908460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698520320).

1128908460 is an abundant number, since it is smaller than the sum of its proper divisors (2268132180).

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

1128908460 is a wasteful number, since it uses less digits than its factorization.

1128908460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16615 (or 16613 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 1128908460 is about 33599.2330269606. The cubic root of 1128908460 is about 1041.2449526505.

The spelling of 1128908460 in words is "one billion, one hundred twenty-eight million, nine hundred eight thousand, four hundred sixty".