34128727 has 4 divisors (see below), whose sum is σ = 34707240. Its totient is φ = 33550216.

The previous prime is 34128719. The next prime is 34128749. The reversal of 34128727 is 72782143.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 34128727 - 2³ = 34128719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34128692 and 34128701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34128797) 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 3 ways as a sum of consecutive naturals, for example, 289168 + ... + 289285.

It is an arithmetic number, because the mean of its divisors is an integer number (8676810).

Almost surely, 2^34128727 is an apocalyptic number.

34128727 is a deficient number, since it is larger than the sum of its proper divisors (578513).

34128727 is an equidigital number, since it uses as much as digits as its factorization.

34128727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578512.

The product of its digits is 18816, while the sum is 34.

The square root of 34128727 is about 5841.9797158155. The cubic root of 34128727 is about 324.3695137690.

The spelling of 34128727 in words is "thirty-four million, one hundred twenty-eight thousand, seven hundred twenty-seven".