3478257 has 12 divisors (see below), whose sum is σ = 5057104. Its totient is φ = 2303640.

The previous prime is 3478247. The next prime is 3478261. The reversal of 3478257 is 7528743.

3478257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3478257 - 2¹² = 3474161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3478247) 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 11 ways as a sum of consecutive naturals, for example, 282 + ... + 2652.

Almost surely, 2^3478257 is an apocalyptic number.

It is an amenable number.

3478257 is a deficient number, since it is larger than the sum of its proper divisors (1578847).

3478257 is a wasteful number, since it uses less digits than its factorization.

3478257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540 (or 2537 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 3478257 is about 1865.0085790687. The cubic root of 3478257 is about 151.5143926463.

The spelling of 3478257 in words is "three million, four hundred seventy-eight thousand, two hundred fifty-seven".