188028441 has 12 divisors (see below), whose sum is σ = 272726740. Its totient is φ = 124830720.

The previous prime is 188028439. The next prime is 188028443. The reversal of 188028441 is 144820881.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (188028439) and next prime (188028443).

It can be written as a sum of positive squares in 2 ways, for example, as 69305625 + 118722816 = 8325^2 + 10896^2 .

It is not a de Polignac number, because 188028441 - 2¹ = 188028439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 188028396 and 188028405.

It is not an unprimeable number, because it can be changed into a prime (188028443) 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 11 ways as a sum of consecutive naturals, for example, 41176 + ... + 45513.

Almost surely, 2^188028441 is an apocalyptic number.

It is an amenable number.

188028441 is a deficient number, since it is larger than the sum of its proper divisors (84698299).

188028441 is a wasteful number, since it uses less digits than its factorization.

188028441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86936 (or 86933 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 188028441 is about 13712.3462981359. The cubic root of 188028441 is about 572.8943182014.

The spelling of 188028441 in words is "one hundred eighty-eight million, twenty-eight thousand, four hundred forty-one".