34234721 has 4 divisors (see below), whose sum is σ = 34254000. Its totient is φ = 34215444.

The previous prime is 34234679. The next prime is 34234747. The reversal of 34234721 is 12743243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34234721 is a prime.

It is a super-2 number, since 2×34234721² = 2344032243895682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34234771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6671 + ... + 10628.

It is an arithmetic number, because the mean of its divisors is an integer number (8563500).

Almost surely, 2^34234721 is an apocalyptic number.

It is an amenable number.

34234721 is a deficient number, since it is larger than the sum of its proper divisors (19279).

34234721 is a wasteful number, since it uses less digits than its factorization.

34234721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19278.

The product of its digits is 4032, while the sum is 26.

The square root of 34234721 is about 5851.0444366797. The cubic root of 34234721 is about 324.7049661755.

Adding to 34234721 its reverse (12743243), we get a palindrome (46977964).

The spelling of 34234721 in words is "thirty-four million, two hundred thirty-four thousand, seven hundred twenty-one".