34356721 has 8 divisors (see below), whose sum is σ = 39670400. Its totient is φ = 29144448.

The previous prime is 34356713. The next prime is 34356727. The reversal of 34356721 is 12765343.

34356721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 34356721 - 2³ = 34356713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (34356727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24621 + ... + 25978.

It is an arithmetic number, because the mean of its divisors is an integer number (4958800).

Almost surely, 2^34356721 is an apocalyptic number.

It is an amenable number.

34356721 is a deficient number, since it is larger than the sum of its proper divisors (5313679).

34356721 is an equidigital number, since it uses as much as digits as its factorization.

34356721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50703.

The product of its digits is 15120, while the sum is 31.

The square root of 34356721 is about 5861.4606541373. The cubic root of 34356721 is about 325.0902187403.

The spelling of 34356721 in words is "thirty-four million, three hundred fifty-six thousand, seven hundred twenty-one".