1128434450 has 48 divisors (see below), whose sum is σ = 2465842176. Its totient is φ = 378772800.

The previous prime is 1128434429. The next prime is 1128434467. The reversal of 1128434450 is 544348211.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71762 + ... + 86061.

It is an arithmetic number, because the mean of its divisors is an integer number (51371712).

Almost surely, 2^1128434450 is an apocalyptic number.

1128434450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1128434450 is an abundant number, since it is smaller than the sum of its proper divisors (1337407726).

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

1128434450 is a wasteful number, since it uses less digits than its factorization.

1128434450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157859 (or 157854 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 1128434450 is about 33592.1784050990. The cubic root of 1128434450 is about 1041.0991984012.

The spelling of 1128434450 in words is "one billion, one hundred twenty-eight million, four hundred thirty-four thousand, four hundred fifty".