11550428 has 6 divisors (see below), whose sum is σ = 20213256. Its totient is φ = 5775212.

The previous prime is 11550421. The next prime is 11550433. The reversal of 11550428 is 82405511.

It is a junction number, because it is equal to n+sod(n) for n = 11550397 and 11550406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11550421) 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 as a sum of consecutive naturals, namely, 1443800 + ... + 1443807.

It is an arithmetic number, because the mean of its divisors is an integer number (3368876).

Almost surely, 2^11550428 is an apocalyptic number.

It is an amenable number.

11550428 is a deficient number, since it is larger than the sum of its proper divisors (8662828).

11550428 is a wasteful number, since it uses less digits than its factorization.

11550428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887611 (or 2887609 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 11550428 is about 3398.5920614278. The cubic root of 11550428 is about 226.0473182567.

Adding to 11550428 its reverse (82405511), we get a palindrome (93955939).

The spelling of 11550428 in words is "eleven million, five hundred fifty thousand, four hundred twenty-eight".