34220905 has 8 divisors (see below), whose sum is σ = 42020352. Its totient is φ = 26739888.

The previous prime is 34220891. The next prime is 34220909. The reversal of 34220905 is 50902243.

34220905 = 228² + 229² + ... + 485².

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 34220905 - 2⁷ = 34220777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34220905.

It is not an unprimeable number, because it can be changed into a prime (34220909) 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, 79369 + ... + 79798.

It is an arithmetic number, because the mean of its divisors is an integer number (5252544).

Almost surely, 2^34220905 is an apocalyptic number.

It is an amenable number.

34220905 is a deficient number, since it is larger than the sum of its proper divisors (7799447).

34220905 is a wasteful number, since it uses less digits than its factorization.

34220905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159215.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 34220905 is about 5849.8636736252. The cubic root of 34220905 is about 324.6612802400.

The spelling of 34220905 in words is "thirty-four million, two hundred twenty thousand, nine hundred five".