1128046640 has 120 divisors (see below), whose sum is σ = 3156427440. Its totient is φ = 373384704.

The previous prime is 1128046637. The next prime is 1128046643. The reversal of 1128046640 is 466408211.

It is an interprime number because it is at equal distance from previous prime (1128046637) and next prime (1128046643).

It is a junction number, because it is equal to n+sod(n) for n = 1128046597 and 1128046606.

It is not an unprimeable number, because it can be changed into a prime (1128046643) 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 23 ways as a sum of consecutive naturals, for example, 108719 + ... + 118641.

It is an arithmetic number, because the mean of its divisors is an integer number (26303562).

Almost surely, 2^1128046640 is an apocalyptic number.

1128046640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128046640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1578213720).

1128046640 is an abundant number, since it is smaller than the sum of its proper divisors (2028380800).

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

1128046640 is a wasteful number, since it uses less digits than its factorization.

1128046640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9979 (or 9966 counting only the distinct ones).

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

The square root of 1128046640 is about 33586.4055832118. The cubic root of 1128046640 is about 1040.9799195953.

The spelling of 1128046640 in words is "one billion, one hundred twenty-eight million, forty-six thousand, six hundred forty".