105428761 has 4 divisors (see below), whose sum is σ = 106198452. Its totient is φ = 104659072.

The previous prime is 105428731. The next prime is 105428767. The reversal of 105428761 is 167824501.

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 81721600 + 23707161 = 9040^2 + 4869^2 .

It is a cyclic number.

It is not a de Polignac number, because 105428761 - 2⁷ = 105428633 is a prime.

It is a super-2 number, since 2×105428761² = 22230447291990242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105428767) 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, 384640 + ... + 384913.

It is an arithmetic number, because the mean of its divisors is an integer number (26549613).

Almost surely, 2^105428761 is an apocalyptic number.

It is an amenable number.

105428761 is a deficient number, since it is larger than the sum of its proper divisors (769691).

105428761 is an equidigital number, since it uses as much as digits as its factorization.

105428761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769690.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 105428761 is about 10267.8508462092. The cubic root of 105428761 is about 472.4106729973.

The spelling of 105428761 in words is "one hundred five million, four hundred twenty-eight thousand, seven hundred sixty-one".