105628849 has 4 divisors (see below), whose sum is σ = 106815780. Its totient is φ = 104441920.

The previous prime is 105628843. The next prime is 105628867. The reversal of 105628849 is 948826501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39287824 + 66341025 = 6268^2 + 8145^2 .

It is a cyclic number.

It is not a de Polignac number, because 105628849 - 2⁹ = 105628337 is a prime.

It is a super-2 number, since 2×105628849² = 22314907482129602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105628843) 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 3 ways as a sum of consecutive naturals, for example, 593332 + ... + 593509.

It is an arithmetic number, because the mean of its divisors is an integer number (26703945).

Almost surely, 2^105628849 is an apocalyptic number.

It is an amenable number.

105628849 is a deficient number, since it is larger than the sum of its proper divisors (1186931).

105628849 is an equidigital number, since it uses as much as digits as its factorization.

105628849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186930.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 105628849 is about 10277.5896493293. The cubic root of 105628849 is about 472.7093390397.

The spelling of 105628849 in words is "one hundred five million, six hundred twenty-eight thousand, eight hundred forty-nine".