34257021 has 8 divisors (see below), whose sum is σ = 45786720. Its totient is φ = 22782672.

The previous prime is 34257001. The next prime is 34257043. The reversal of 34257021 is 12075243.

34257021 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 not a de Polignac number, because 34257021 - 2¹¹ = 34254973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 34256982 and 34257000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34257001) 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, 12370 + ... + 14883.

It is an arithmetic number, because the mean of its divisors is an integer number (5723340).

Almost surely, 2^34257021 is an apocalyptic number.

It is an amenable number.

34257021 is a deficient number, since it is larger than the sum of its proper divisors (11529699).

34257021 is a wasteful number, since it uses less digits than its factorization.

34257021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27675.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 34257021 is about 5852.9497691335. The cubic root of 34257021 is about 324.7754535724.

The spelling of 34257021 in words is "thirty-four million, two hundred fifty-seven thousand, twenty-one".