109436820 has 96 divisors (see below), whose sum is σ = 335010816. Its totient is φ = 26572800.

The previous prime is 109436819. The next prime is 109436843. The reversal of 109436820 is 28634901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29890 + ... + 33350.

It is an arithmetic number, because the mean of its divisors is an integer number (3489696).

Almost surely, 2^109436820 is an apocalyptic number.

109436820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109436820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167505408).

109436820 is an abundant number, since it is smaller than the sum of its proper divisors (225573996).

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

109436820 is a wasteful number, since it uses less digits than its factorization.

109436820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521 (or 3519 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 109436820 is about 10461.2054754698. The cubic root of 109436820 is about 478.3228796036.

The spelling of 109436820 in words is "one hundred nine million, four hundred thirty-six thousand, eight hundred twenty".