34309020 has 48 divisors (see below), whose sum is σ = 97886880. Its totient is φ = 8975616.

The previous prime is 34309019. The next prime is 34309039. The reversal of 34309020 is 2090343.

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 15 ways as a sum of consecutive naturals, for example, 2215 + ... + 8574.

It is an arithmetic number, because the mean of its divisors is an integer number (2039310).

Almost surely, 2^34309020 is an apocalyptic number.

34309020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

34309020 is an abundant number, since it is smaller than the sum of its proper divisors (63577860).

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

34309020 is a wasteful number, since it uses less digits than its factorization.

34309020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10854 (or 10852 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 34309020 is about 5857.3902038365. The cubic root of 34309020 is about 324.9396968984.

Adding to 34309020 its reverse (2090343), we get a palindrome (36399363).

The spelling of 34309020 in words is "thirty-four million, three hundred nine thousand, twenty".