11640628 has 12 divisors (see below), whose sum is σ = 20416032. Its totient is φ = 5807480.

The previous prime is 11640623. The next prime is 11640649. The reversal of 11640628 is 82604611.

It is a junction number, because it is equal to n+sod(n) for n = 11640596 and 11640605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11640623) 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 3 ways as a sum of consecutive naturals, for example, 1000 + ... + 4927.

It is an arithmetic number, because the mean of its divisors is an integer number (1701336).

Almost surely, 2^11640628 is an apocalyptic number.

It is an amenable number.

11640628 is a deficient number, since it is larger than the sum of its proper divisors (8775404).

11640628 is a wasteful number, since it uses less digits than its factorization.

11640628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6422 (or 6420 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 11640628 is about 3411.8364556350. The cubic root of 11640628 is about 226.6342120007.

The spelling of 11640628 in words is "eleven million, six hundred forty thousand, six hundred twenty-eight".