106728049 has 4 divisors (see below), whose sum is σ = 106940736. Its totient is φ = 106515364.

The previous prime is 106728001. The next prime is 106728059. The reversal of 106728049 is 940827601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 106728049 - 2¹³ = 106719857 is a prime.

It is a super-2 number, since 2×106728049² = 22781752886692802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 106727999 and 106728017.

It is not an unprimeable number, because it can be changed into a prime (106728059) 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, 105589 + ... + 106594.

It is an arithmetic number, because the mean of its divisors is an integer number (26735184).

Almost surely, 2^106728049 is an apocalyptic number.

It is an amenable number.

106728049 is a deficient number, since it is larger than the sum of its proper divisors (212687).

106728049 is an equidigital number, since it uses as much as digits as its factorization.

106728049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212686.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 106728049 is about 10330.9268219265. The cubic root of 106728049 is about 474.3433941586.

It can be divided in two parts, 10672 and 8049, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 106728049 in words is "one hundred six million, seven hundred twenty-eight thousand, forty-nine".