34281220 has 24 divisors (see below), whose sum is σ = 73067904. Its totient is φ = 13507296.

The previous prime is 34281211. The next prime is 34281227. The reversal of 34281220 is 2218243.

It is a junction number, because it is equal to n+sod(n) for n = 34281191 and 34281200.

It is not an unprimeable number, because it can be changed into a prime (34281227) 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, 11452 + ... + 14131.

It is an arithmetic number, because the mean of its divisors is an integer number (3044496).

Almost surely, 2^34281220 is an apocalyptic number.

It is an amenable number.

34281220 is an abundant number, since it is smaller than the sum of its proper divisors (38786684).

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

34281220 is a wasteful number, since it uses less digits than its factorization.

34281220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25659 (or 25657 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 34281220 is about 5855.0166524101. The cubic root of 34281220 is about 324.8519088617.

Adding to 34281220 its reverse (2218243), we get a palindrome (36499463).

The spelling of 34281220 in words is "thirty-four million, two hundred eighty-one thousand, two hundred twenty".