109445720 has 16 divisors (see below), whose sum is σ = 246252960. Its totient is φ = 43778272.

The previous prime is 109445683. The next prime is 109445723. The reversal of 109445720 is 27544901.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109445723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1368032 + ... + 1368111.

It is an arithmetic number, because the mean of its divisors is an integer number (15390810).

Almost surely, 2^109445720 is an apocalyptic number.

109445720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109445720 is an abundant number, since it is smaller than the sum of its proper divisors (136807240).

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

109445720 is a wasteful number, since it uses less digits than its factorization.

109445720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2736154 (or 2736150 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 109445720 is about 10461.6308480084. The cubic root of 109445720 is about 478.3358458619.

The spelling of 109445720 in words is "one hundred nine million, four hundred forty-five thousand, seven hundred twenty".