34345520 has 80 divisors (see below), whose sum is σ = 89994240. Its totient is φ = 12076800.

The previous prime is 34345511. The next prime is 34345547. The reversal of 34345520 is 2554343.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×34345520² = 2359229488140800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 34345520.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26651 + ... + 27909.

It is an arithmetic number, because the mean of its divisors is an integer number (1124928).

Almost surely, 2^34345520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34345520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44997120).

34345520 is an abundant number, since it is smaller than the sum of its proper divisors (55648720).

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

34345520 is a wasteful number, since it uses less digits than its factorization.

34345520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 34345520 is about 5860.5050976857. The cubic root of 34345520 is about 325.0548861938.

Adding to 34345520 its reverse (2554343), we get a palindrome (36899863).

The spelling of 34345520 in words is "thirty-four million, three hundred forty-five thousand, five hundred twenty".