11428556 has 12 divisors (see below), whose sum is σ = 21176568. Its totient is φ = 5378112.

The previous prime is 11428531. The next prime is 11428559. The reversal of 11428556 is 65582411.

11428556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11428556² = 261223784490272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11428559) 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, 83966 + ... + 84101.

It is an arithmetic number, because the mean of its divisors is an integer number (1764714).

Almost surely, 2^11428556 is an apocalyptic number.

It is an amenable number.

11428556 is a deficient number, since it is larger than the sum of its proper divisors (9748012).

11428556 is a wasteful number, since it uses less digits than its factorization.

11428556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168088 (or 168086 counting only the distinct ones).

The product of its digits is 9600, while the sum is 32.

The square root of 11428556 is about 3380.6147369968. The cubic root of 11428556 is about 225.2494747264.

The spelling of 11428556 in words is "eleven million, four hundred twenty-eight thousand, five hundred fifty-six".