11485640 has 16 divisors (see below), whose sum is σ = 25842780. Its totient is φ = 4594240.

The previous prime is 11485631. The next prime is 11485679. The reversal of 11485640 is 4658411.

It can be written as a sum of positive squares in 2 ways, for example, as 11142244 + 343396 = 3338^2 + 586^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 143531 + ... + 143610.

Almost surely, 2^11485640 is an apocalyptic number.

11485640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11485640 is an abundant number, since it is smaller than the sum of its proper divisors (14357140).

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

11485640 is a wasteful number, since it uses less digits than its factorization.

11485640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287152 (or 287148 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 11485640 is about 3389.0470637039. The cubic root of 11485640 is about 225.6238816661.

The spelling of 11485640 in words is "eleven million, four hundred eighty-five thousand, six hundred forty".