6109220 has 24 divisors (see below), whose sum is σ = 13816824. Its totient is φ = 2255616.

The previous prime is 6109219. The next prime is 6109223. The reversal of 6109220 is 229016.

6109220 = 274² + 275² + ... + 338².

It can be written as a sum of positive squares in 4 ways, for example, as 473344 + 5635876 = 688^2 + 2374^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 6109192 and 6109201.

It is not an unprimeable number, because it can be changed into a prime (6109223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11489 + ... + 12008.

It is an arithmetic number, because the mean of its divisors is an integer number (575701).

Almost surely, 2^6109220 is an apocalyptic number.

It is an amenable number.

6109220 is an abundant number, since it is smaller than the sum of its proper divisors (7707604).

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

6109220 is a wasteful number, since it uses less digits than its factorization.

6109220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23519 (or 23517 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 6109220 is about 2471.6836367141. The cubic root of 6109220 is about 182.8080242652.

It can be divided in two parts, 6109 and 220, that multiplied together give a triangular number (1343980 = T₁₆₃₉).

The spelling of 6109220 in words is "six million, one hundred nine thousand, two hundred twenty".