34709220 has 216 divisors, whose sum is σ = 131092416. Its totient is φ = 7278336.

The previous prime is 34709209. The next prime is 34709251. The reversal of 34709220 is 2290743.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 212859 + ... + 213021.

Almost surely, 2^34709220 is an apocalyptic number.

34709220 is a gapful number since it is divisible by the number (30) 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 34709220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65546208).

34709220 is an abundant number, since it is smaller than the sum of its proper divisors (96383196).

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

34709220 is a wasteful number, since it uses less digits than its factorization.

34709220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 34709220 is about 5891.4531314439. The cubic root of 34709220 is about 326.1982434302.

Adding to 34709220 its reverse (2290743), we get a palindrome (36999963).

The spelling of 34709220 in words is "thirty-four million, seven hundred nine thousand, two hundred twenty".