34342640 has 20 divisors (see below), whose sum is σ = 79846824. Its totient is φ = 13737024.

The previous prime is 34342619. The next prime is 34342667. The reversal of 34342640 is 4624343.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214562 + ... + 214721.

Almost surely, 2^34342640 is an apocalyptic number.

It is an amenable number.

34342640 is an abundant number, since it is smaller than the sum of its proper divisors (45504184).

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

34342640 is a wasteful number, since it uses less digits than its factorization.

34342640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429296 (or 429290 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 34342640 is about 5860.2593799251. The cubic root of 34342640 is about 325.0458002515.

Adding to 34342640 its reverse (4624343), we get a palindrome (38966983).

The spelling of 34342640 in words is "thirty-four million, three hundred forty-two thousand, six hundred forty".