34561220 has 12 divisors (see below), whose sum is σ = 72578604. Its totient is φ = 13824480.

The previous prime is 34561211. The next prime is 34561223. The reversal of 34561220 is 2216543.

34561220 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 2 ways, for example, as 10137856 + 24423364 = 3184^2 + 4942^2 .

It is not an unprimeable number, because it can be changed into a prime (34561223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864011 + ... + 864050.

It is an arithmetic number, because the mean of its divisors is an integer number (6048217).

Almost surely, 2^34561220 is an apocalyptic number.

It is an amenable number.

34561220 is an abundant number, since it is smaller than the sum of its proper divisors (38017384).

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

34561220 is a wasteful number, since it uses less digits than its factorization.

34561220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728070 (or 1728068 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 34561220 is about 5878.8791448711. The cubic root of 34561220 is about 325.7339468045.

Adding to 34561220 its reverse (2216543), we get a palindrome (36777763).

The spelling of 34561220 in words is "thirty-four million, five hundred sixty-one thousand, two hundred twenty".