3428247 has 8 divisors (see below), whose sum is σ = 4582656. Its totient is φ = 2279672.

The previous prime is 3428239. The next prime is 3428251. The reversal of 3428247 is 7428243.

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

It is a cyclic number.

It is not a de Polignac number, because 3428247 - 2³ = 3428239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3428267) 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, 178 + ... + 2624.

It is an arithmetic number, because the mean of its divisors is an integer number (572832).

Almost surely, 2^3428247 is an apocalyptic number.

3428247 is a deficient number, since it is larger than the sum of its proper divisors (1154409).

3428247 is a wasteful number, since it uses less digits than its factorization.

3428247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917.

The product of its digits is 10752, while the sum is 30.

The square root of 3428247 is about 1851.5525917456. The cubic root of 3428247 is about 150.7847319240.

The spelling of 3428247 in words is "three million, four hundred twenty-eight thousand, two hundred forty-seven".