34402721 has 8 divisors (see below), whose sum is σ = 35091264. Its totient is φ = 33721200.

The previous prime is 34402717. The next prime is 34402741. The reversal of 34402721 is 12720443.

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 34402721 - 2² = 34402717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34402741) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8750 + ... + 12056.

It is an arithmetic number, because the mean of its divisors is an integer number (4386408).

Almost surely, 2^34402721 is an apocalyptic number.

It is an amenable number.

34402721 is a deficient number, since it is larger than the sum of its proper divisors (688543).

34402721 is a wasteful number, since it uses less digits than its factorization.

34402721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3511.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 34402721 is about 5865.3832781840. The cubic root of 34402721 is about 325.2352411268.

The spelling of 34402721 in words is "thirty-four million, four hundred two thousand, seven hundred twenty-one".