1128338420 has 48 divisors (see below), whose sum is σ = 2628763200. Its totient is φ = 403345920.

The previous prime is 1128338417. The next prime is 1128338423. The reversal of 1128338420 is 248338211.

It is an interprime number because it is at equal distance from previous prime (1128338417) and next prime (1128338423).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128338423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30485 + ... + 56444.

It is an arithmetic number, because the mean of its divisors is an integer number (54765900).

Almost surely, 2^1128338420 is an apocalyptic number.

1128338420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128338420 is an abundant number, since it is smaller than the sum of its proper divisors (1500424780).

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

1128338420 is a wasteful number, since it uses less digits than its factorization.

1128338420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87008 (or 87006 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 1128338420 is about 33590.7490240989. The cubic root of 1128338420 is about 1041.0696649792.

The spelling of 1128338420 in words is "one billion, one hundred twenty-eight million, three hundred thirty-eight thousand, four hundred twenty".