34721385 has 8 divisors (see below), whose sum is σ = 55554240. Its totient is φ = 18518064.

The previous prime is 34721377. The next prime is 34721389. The reversal of 34721385 is 58312743.

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

It is not a de Polignac number, because 34721385 - 2³ = 34721377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (34721389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157365 + ... + 1157394.

It is an arithmetic number, because the mean of its divisors is an integer number (6944280).

Almost surely, 2^34721385 is an apocalyptic number.

It is an amenable number.

34721385 is a deficient number, since it is larger than the sum of its proper divisors (20832855).

34721385 is a wasteful number, since it uses less digits than its factorization.

34721385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314767.

The product of its digits is 20160, while the sum is 33.

The square root of 34721385 is about 5892.4854687984. The cubic root of 34721385 is about 326.2363479850.

The spelling of 34721385 in words is "thirty-four million, seven hundred twenty-one thousand, three hundred eighty-five".