34309220 has 48 divisors (see below), whose sum is σ = 79023168. Its totient is φ = 12408960.

The previous prime is 34309217. The next prime is 34309237. The reversal of 34309220 is 2290343.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60659 + ... + 61221.

It is an arithmetic number, because the mean of its divisors is an integer number (1646316).

Almost surely, 2^34309220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34309220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39511584).

34309220 is an abundant number, since it is smaller than the sum of its proper divisors (44713948).

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

34309220 is a wasteful number, since it uses less digits than its factorization.

34309220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 34309220 is about 5857.4072762614. The cubic root of 34309220 is about 324.9403282951.

Adding to 34309220 its reverse (2290343), we get a palindrome (36599563).

The spelling of 34309220 in words is "thirty-four million, three hundred nine thousand, two hundred twenty".