34221918 has 32 divisors (see below), whose sum is σ = 72965664. Its totient is φ = 10662912.

The previous prime is 34221899. The next prime is 34221959. The reversal of 34221918 is 81912243.

34221918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×34221918² = 2342279343197448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14946 + ... + 17082.

It is an arithmetic number, because the mean of its divisors is an integer number (2280177).

Almost surely, 2^34221918 is an apocalyptic number.

34221918 is an abundant number, since it is smaller than the sum of its proper divisors (38743746).

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

34221918 is a wasteful number, since it uses less digits than its factorization.

34221918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316.

The product of its digits is 3456, while the sum is 30.

The square root of 34221918 is about 5849.9502561988. The cubic root of 34221918 is about 324.6644837266.

The spelling of 34221918 in words is "thirty-four million, two hundred twenty-one thousand, nine hundred eighteen".