11870028 has 18 divisors (see below), whose sum is σ = 30004884. Its totient is φ = 3956664.

The previous prime is 11870017. The next prime is 11870069. The reversal of 11870028 is 82007811.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 11869983 and 11870010.

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 5 ways as a sum of consecutive naturals, for example, 164826 + ... + 164897.

It is an arithmetic number, because the mean of its divisors is an integer number (1666938).

Almost surely, 2^11870028 is an apocalyptic number.

11870028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11870028 is an abundant number, since it is smaller than the sum of its proper divisors (18134856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11870028 is a wasteful number, since it uses less digits than its factorization.

11870028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329733 (or 329728 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 11870028 is about 3445.2906989106. The cubic root of 11870028 is about 228.1132862691.

Adding to 11870028 its reverse (82007811), we get a palindrome (93877839).

The spelling of 11870028 in words is "eleven million, eight hundred seventy thousand, twenty-eight".