1128290844 has 12 divisors (see below), whose sum is σ = 2632678664. Its totient is φ = 376096944.

The previous prime is 1128290843. The next prime is 1128290857. The reversal of 1128290844 is 4480928211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128290843) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 47012107 + ... + 47012130.

Almost surely, 2^1128290844 is an apocalyptic number.

It is an amenable number.

1128290844 is an abundant number, since it is smaller than the sum of its proper divisors (1504387820).

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

1128290844 is a wasteful number, since it uses less digits than its factorization.

1128290844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94024244 (or 94024242 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 1128290844 is about 33590.0408454649. The cubic root of 1128290844 is about 1041.0550326592.

The spelling of 1128290844 in words is "one billion, one hundred twenty-eight million, two hundred ninety thousand, eight hundred forty-four".