11428155 has 16 divisors (see below), whose sum is σ = 20316960. Its totient is φ = 6094944.

The previous prime is 11428147. The next prime is 11428201. The reversal of 11428155 is 55182411.

It is not a de Polignac number, because 11428155 - 2³ = 11428147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 42192 + ... + 42461.

It is an arithmetic number, because the mean of its divisors is an integer number (1269810).

Almost surely, 2^11428155 is an apocalyptic number.

11428155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11428155 is a deficient number, since it is larger than the sum of its proper divisors (8888805).

11428155 is an equidigital number, since it uses as much as digits as its factorization.

11428155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84667 (or 84661 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The square root of 11428155 is about 3380.5554277367. Note that the first 3 decimals coincide. The cubic root of 11428155 is about 225.2468402117.

The spelling of 11428155 in words is "eleven million, four hundred twenty-eight thousand, one hundred fifty-five".