109628 has 6 divisors (see below), whose sum is σ = 191856. Its totient is φ = 54812.

The previous prime is 109621. The next prime is 109639. The reversal of 109628 is 826901.

It is a junction number, because it is equal to n+sod(n) for n = 109597 and 109606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109621) by changing a digit.

109628 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13700 + ... + 13707.

It is an arithmetic number, because the mean of its divisors is an integer number (31976).

2¹⁰⁹⁶²⁸ is an apocalyptic number.

It is an amenable number.

109628 is a deficient number, since it is larger than the sum of its proper divisors (82228).

109628 is a wasteful number, since it uses less digits than its factorization.

109628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27411 (or 27409 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 109628 is about 331.1011929909. The cubic root of 109628 is about 47.8601252000.

It can be divided in two parts, 109 and 628, that added together give a palindrome (737).

The spelling of 109628 in words is "one hundred nine thousand, six hundred twenty-eight".