109139228 has 24 divisors (see below), whose sum is σ = 210008064. Its totient is φ = 49215600.

The previous prime is 109139197. The next prime is 109139237. The reversal of 109139228 is 822931901.

It is a super-2 number, since 2×109139228² = 23822742176871968, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4178 + ... + 15353.

It is an arithmetic number, because the mean of its divisors is an integer number (8750336).

Almost surely, 2^109139228 is an apocalyptic number.

It is an amenable number.

109139228 is a deficient number, since it is larger than the sum of its proper divisors (100868836).

109139228 is a wasteful number, since it uses less digits than its factorization.

109139228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19673 (or 19671 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 109139228 is about 10446.9721929371. The cubic root of 109139228 is about 477.8889175417. Note that the first 3 decimals are identical.

The spelling of 109139228 in words is "one hundred nine million, one hundred thirty-nine thousand, two hundred twenty-eight".