34123218 has 16 divisors (see below), whose sum is σ = 68362176. Its totient is φ = 11355120.

The previous prime is 34123211. The next prime is 34123241. The reversal of 34123218 is 81232143.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (34123211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721 + ... + 8292.

It is an arithmetic number, because the mean of its divisors is an integer number (4272636).

Almost surely, 2^34123218 is an apocalyptic number.

34123218 is an abundant number, since it is smaller than the sum of its proper divisors (34238958).

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

34123218 is a wasteful number, since it uses less digits than its factorization.

34123218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9649.

The product of its digits is 1152, while the sum is 24.

The square root of 34123218 is about 5841.5081956632. The cubic root of 34123218 is about 324.3520597748.

The spelling of 34123218 in words is "thirty-four million, one hundred twenty-three thousand, two hundred eighteen".