11391628 has 12 divisors (see below), whose sum is σ = 20262592. Its totient is φ = 5602320.

The previous prime is 11391623. The next prime is 11391631. The reversal of 11391628 is 82619311.

11391628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11391628.

It is not an unprimeable number, because it can be changed into a prime (11391623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23100 + ... + 23587.

Almost surely, 2^11391628 is an apocalyptic number.

It is an amenable number.

11391628 is a deficient number, since it is larger than the sum of its proper divisors (8870964).

11391628 is a wasteful number, since it uses less digits than its factorization.

11391628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46752 (or 46750 counting only the distinct ones).

The product of its digits is 2592, while the sum is 31.

The square root of 11391628 is about 3375.1485893217. The cubic root of 11391628 is about 225.0066039214.

The spelling of 11391628 in words is "eleven million, three hundred ninety-one thousand, six hundred twenty-eight".