1128254512 has 160 divisors (see below), whose sum is σ = 2944097280. Its totient is φ = 405672960.

The previous prime is 1128254509. The next prime is 1128254527. The reversal of 1128254512 is 2154528211.

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, 821058 + ... + 822430.

It is an arithmetic number, because the mean of its divisors is an integer number (18400608).

Almost surely, 2^1128254512 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 1128254512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1472048640).

1128254512 is an abundant number, since it is smaller than the sum of its proper divisors (1815842768).

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

1128254512 is a wasteful number, since it uses less digits than its factorization.

1128254512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451 (or 1445 counting only the distinct ones).

The product of its digits is 6400, while the sum is 31.

The square root of 1128254512 is about 33589.5000260498. The cubic root of 1128254512 is about 1041.0438582303.

The spelling of 1128254512 in words is "one billion, one hundred twenty-eight million, two hundred fifty-four thousand, five hundred twelve".