109540820 has 12 divisors (see below), whose sum is σ = 230035764. Its totient is φ = 43816320.

The previous prime is 109540819. The next prime is 109540867. The reversal of 109540820 is 28045901.

It can be written as a sum of positive squares in 2 ways, for example, as 75411856 + 34128964 = 8684^2 + 5842^2 .

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, 2738501 + ... + 2738540.

It is an arithmetic number, because the mean of its divisors is an integer number (19169647).

Almost surely, 2^109540820 is an apocalyptic number.

109540820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109540820 is an abundant number, since it is smaller than the sum of its proper divisors (120494944).

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

109540820 is a wasteful number, since it uses less digits than its factorization.

109540820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5477050 (or 5477048 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 109540820 is about 10466.1750415326. The cubic root of 109540820 is about 478.4743515662.

The spelling of 109540820 in words is "one hundred nine million, five hundred forty thousand, eight hundred twenty".