34306721 has 4 divisors (see below), whose sum is σ = 34417344. Its totient is φ = 34196100.

The previous prime is 34306711. The next prime is 34306751. The reversal of 34306721 is 12760343.

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 not a de Polignac number, because 34306721 - 2¹⁴ = 34290337 is a prime.

It is a super-2 number, since 2×34306721² = 2353902211543682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (34306711) 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, 54845 + ... + 55466.

It is an arithmetic number, because the mean of its divisors is an integer number (8604336).

Almost surely, 2^34306721 is an apocalyptic number.

It is an amenable number.

34306721 is a deficient number, since it is larger than the sum of its proper divisors (110623).

34306721 is a wasteful number, since it uses less digits than its factorization.

34306721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110622.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 34306721 is about 5857.1939527388. The cubic root of 34306721 is about 324.9324388163.

The spelling of 34306721 in words is "thirty-four million, three hundred six thousand, seven hundred twenty-one".