1128260040 has 32 divisors (see below), whose sum is σ = 3384780480. Its totient is φ = 300869312.

The previous prime is 1128260039. The next prime is 1128260047. The reversal of 1128260040 is 400628211.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1128260047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4700964 + ... + 4701203.

It is an arithmetic number, because the mean of its divisors is an integer number (105774390).

Almost surely, 2^1128260040 is an apocalyptic number.

1128260040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128260040 is an abundant number, since it is smaller than the sum of its proper divisors (2256520440).

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

1128260040 is a wasteful number, since it uses less digits than its factorization.

1128260040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9402181 (or 9402177 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1128260040 is about 33589.5823135686. The cubic root of 1128260040 is about 1041.0455584617.

Adding to 1128260040 its reverse (400628211), we get a palindrome (1528888251).

The spelling of 1128260040 in words is "one billion, one hundred twenty-eight million, two hundred sixty thousand, forty".