11057840 has 40 divisors (see below), whose sum is σ = 25854000. Its totient is φ = 4398336.

The previous prime is 11057777. The next prime is 11057843. The reversal of 11057840 is 4875011.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (11057843) 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 7 ways as a sum of consecutive naturals, for example, 21911 + ... + 22409.

It is an arithmetic number, because the mean of its divisors is an integer number (646350).

Almost surely, 2^11057840 is an apocalyptic number.

11057840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11057840 is an abundant number, since it is smaller than the sum of its proper divisors (14796160).

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

11057840 is a wasteful number, since it uses less digits than its factorization.

11057840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 11057840 is about 3325.3330660251. Note that the first 3 decimals coincide. The cubic root of 11057840 is about 222.7871308832.

The spelling of 11057840 in words is "eleven million, fifty-seven thousand, eight hundred forty".