34642729 has 4 divisors (see below), whose sum is σ = 37792080. Its totient is φ = 31493380.

The previous prime is 34642721. The next prime is 34642747. The reversal of 34642729 is 92724643.

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 34642729 - 2³ = 34642721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34642721) 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, 1574659 + ... + 1574680.

It is an arithmetic number, because the mean of its divisors is an integer number (9448020).

Almost surely, 2^34642729 is an apocalyptic number.

It is an amenable number.

34642729 is a deficient number, since it is larger than the sum of its proper divisors (3149351).

34642729 is a wasteful number, since it uses less digits than its factorization.

34642729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149350.

The product of its digits is 72576, while the sum is 37.

The square root of 34642729 is about 5885.8074212465. The cubic root of 34642729 is about 325.9898155073.

The spelling of 34642729 in words is "thirty-four million, six hundred forty-two thousand, seven hundred twenty-nine".