109031028 has 12 divisors (see below), whose sum is σ = 254405760. Its totient is φ = 36343672.

The previous prime is 109031011. The next prime is 109031033. The reversal of 109031028 is 820130901.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 109030989 and 109031007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4542948 + ... + 4542971.

It is an arithmetic number, because the mean of its divisors is an integer number (21200480).

Almost surely, 2^109031028 is an apocalyptic number.

It is an amenable number.

109031028 is an abundant number, since it is smaller than the sum of its proper divisors (145374732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109031028 is a wasteful number, since it uses less digits than its factorization.

109031028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9085926 (or 9085924 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 109031028 is about 10441.7923748751. The cubic root of 109031028 is about 477.7309398870.

Adding to 109031028 its reverse (820130901), we get a palindrome (929161929).

The spelling of 109031028 in words is "one hundred nine million, thirty-one thousand, twenty-eight".