34105820 has 24 divisors (see below), whose sum is σ = 81854304. Its totient is φ = 11693376.

The previous prime is 34105811. The next prime is 34105847. The reversal of 34105820 is 2850143.

It is a congruent number.

It is an unprimeable number.

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, 121667 + ... + 121946.

It is an arithmetic number, because the mean of its divisors is an integer number (3410596).

Almost surely, 2^34105820 is an apocalyptic number.

It is an amenable number.

34105820 is an abundant number, since it is smaller than the sum of its proper divisors (47748484).

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

34105820 is a wasteful number, since it uses less digits than its factorization.

34105820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243629 (or 243627 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 34105820 is about 5840.0188355861. The cubic root of 34105820 is about 324.2969258924.

Adding to 34105820 its reverse (2850143), we get a palindrome (36955963).

The spelling of 34105820 in words is "thirty-four million, one hundred five thousand, eight hundred twenty".