38109220 has 24 divisors (see below), whose sum is σ = 80326008. Its totient is φ = 15187200.

The previous prime is 38109209. The next prime is 38109241. The reversal of 38109220 is 2290183.

It can be written as a sum of positive squares in 4 ways, for example, as 5207524 + 32901696 = 2282^2 + 5736^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2230 + ... + 9010.

It is an arithmetic number, because the mean of its divisors is an integer number (3346917).

Almost surely, 2^38109220 is an apocalyptic number.

It is an amenable number.

38109220 is an abundant number, since it is smaller than the sum of its proper divisors (42216788).

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

38109220 is a wasteful number, since it uses less digits than its factorization.

38109220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7071 (or 7069 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 38109220 is about 6173.2665583142. The cubic root of 38109220 is about 336.5193334133.

The spelling of 38109220 in words is "thirty-eight million, one hundred nine thousand, two hundred twenty".