11156428 has 24 divisors (see below), whose sum is σ = 20356560. Its totient is φ = 5345280.

The previous prime is 11156423. The next prime is 11156429. The reversal of 11156428 is 82465111.

It is a junction number, because it is equal to n+sod(n) for n = 11156396 and 11156405.

It is not an unprimeable number, because it can be changed into a prime (11156423) 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 7 ways as a sum of consecutive naturals, for example, 9100 + ... + 10252.

It is an arithmetic number, because the mean of its divisors is an integer number (848190).

Almost surely, 2^11156428 is an apocalyptic number.

It is an amenable number.

11156428 is a deficient number, since it is larger than the sum of its proper divisors (9200132).

11156428 is a wasteful number, since it uses less digits than its factorization.

11156428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257 (or 1255 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 11156428 is about 3340.1239497959. The cubic root of 11156428 is about 223.4472713838.

The spelling of 11156428 in words is "eleven million, one hundred fifty-six thousand, four hundred twenty-eight".