109000820 has 12 divisors (see below), whose sum is σ = 228901764. Its totient is φ = 43600320.

The previous prime is 109000819. The next prime is 109000847. The reversal of 109000820 is 28000901.

It can be written as a sum of positive squares in 2 ways, for example, as 12096484 + 96904336 = 3478^2 + 9844^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 5450041 = 109000820 / (1 + 0 + 9 + 0 + 0 + 0 + 8 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 109000792 and 109000801.

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, 2725001 + ... + 2725040.

It is an arithmetic number, because the mean of its divisors is an integer number (19075147).

Almost surely, 2^109000820 is an apocalyptic number.

109000820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109000820 is an abundant number, since it is smaller than the sum of its proper divisors (119900944).

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

109000820 is a wasteful number, since it uses less digits than its factorization.

109000820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450050 (or 5450048 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 109000820 is about 10440.3457797144. The cubic root of 109000820 is about 477.6868159666.

The spelling of 109000820 in words is "one hundred nine million, eight hundred twenty", and thus it is an aban number.