34308640 has 48 divisors (see below), whose sum is σ = 84587328. Its totient is φ = 13125376.

The previous prime is 34308629. The next prime is 34308643. The reversal of 34308640 is 4680343.

It is a junction number, because it is equal to n+sod(n) for n = 34308599 and 34308608.

It is not an unprimeable number, because it can be changed into a prime (34308643) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 982 + ... + 8341.

It is an arithmetic number, because the mean of its divisors is an integer number (1762236).

Almost surely, 2^34308640 is an apocalyptic number.

It is an amenable number.

34308640 is an abundant number, since it is smaller than the sum of its proper divisors (50278688).

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

34308640 is a wasteful number, since it uses less digits than its factorization.

34308640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9361 (or 9353 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 34308640 is about 5857.3577660921. The cubic root of 34308640 is about 324.9384972377.

Adding to 34308640 its reverse (4680343), we get a palindrome (38988983).

The spelling of 34308640 in words is "thirty-four million, three hundred eight thousand, six hundred forty".