109193820 has 48 divisors (see below), whose sum is σ = 306760608. Its totient is φ = 29021440.

The previous prime is 109193809. The next prime is 109193849. The reversal of 109193820 is 28391901.

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 15 ways as a sum of consecutive naturals, for example, 16150 + ... + 21890.

It is an arithmetic number, because the mean of its divisors is an integer number (6390846).

Almost surely, 2^109193820 is an apocalyptic number.

109193820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109193820 is an abundant number, since it is smaller than the sum of its proper divisors (197566788).

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

109193820 is a wasteful number, since it uses less digits than its factorization.

109193820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6070 (or 6068 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 109193820 is about 10449.5846807421. The cubic root of 109193820 is about 477.9685850867.

The spelling of 109193820 in words is "one hundred nine million, one hundred ninety-three thousand, eight hundred twenty".