1128237940 has 24 divisors (see below), whose sum is σ = 2370765600. Its totient is φ = 451015968.

The previous prime is 1128237931. The next prime is 1128238009. The reversal of 1128237940 is 497328211.

It is a self number, because there is not a number n which added to its sum of digits gives 1128237940.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17379 + ... + 50581.

It is an arithmetic number, because the mean of its divisors is an integer number (98781900).

Almost surely, 2^1128237940 is an apocalyptic number.

1128237940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128237940 is an abundant number, since it is smaller than the sum of its proper divisors (1242527660).

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

1128237940 is a wasteful number, since it uses less digits than its factorization.

1128237940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34911 (or 34909 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 1128237940 is about 33589.2533409125. The cubic root of 1128237940 is about 1041.0387611938.

The spelling of 1128237940 in words is "one billion, one hundred twenty-eight million, two hundred thirty-seven thousand, nine hundred forty".