1128396940 has 24 divisors (see below), whose sum is σ = 2585055312. Its totient is φ = 410326080.

The previous prime is 1128396937. The next prime is 1128396943. The reversal of 1128396940 is 496938211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1128396937) and next prime (1128396943).

It is not an unprimeable number, because it can be changed into a prime (1128396943) 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 7 ways as a sum of consecutive naturals, for example, 2564319 + ... + 2564758.

It is an arithmetic number, because the mean of its divisors is an integer number (107710638).

Almost surely, 2^1128396940 is an apocalyptic number.

1128396940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128396940 is an abundant number, since it is smaller than the sum of its proper divisors (1456658372).

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

1128396940 is a wasteful number, since it uses less digits than its factorization.

1128396940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129097 (or 5129095 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1128396940 is about 33591.6200859679. The cubic root of 1128396940 is about 1041.0876626362.

The spelling of 1128396940 in words is "one billion, one hundred twenty-eight million, three hundred ninety-six thousand, nine hundred forty".