109250820 has 144 divisors (see below), whose sum is σ = 391093248. Its totient is φ = 24157440.

The previous prime is 109250819. The next prime is 109250821. The reversal of 109250820 is 28052901.

It is an interprime number because it is at equal distance from previous prime (109250819) and next prime (109250821).

It is not an unprimeable number, because it can be changed into a prime (109250821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37662 + ... + 40458.

Almost surely, 2^109250820 is an apocalyptic number.

109250820 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 109250820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195546624).

109250820 is an abundant number, since it is smaller than the sum of its proper divisors (281842428).

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

109250820 is a wasteful number, since it uses less digits than its factorization.

109250820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 109250820 is about 10452.3117060294. The cubic root of 109250820 is about 478.0517383584.

The spelling of 109250820 in words is "one hundred nine million, two hundred fifty thousand, eight hundred twenty".