6428351 has 4 divisors (see below), whose sum is σ = 6448104. Its totient is φ = 6408600.

The previous prime is 6428311. The next prime is 6428353. The reversal of 6428351 is 1538246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1538246 = 2 ⋅769123.

It is a cyclic number.

It is not a de Polignac number, because 6428351 - 2¹⁸ = 6166207 is a prime.

It is a d-powerful number, because it can be written as 6⁷ + 4⁴ + 2²¹ + 8⁷ + 3⁶ + 5⁹ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6428353) 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 3 ways as a sum of consecutive naturals, for example, 9380 + ... + 10041.

It is an arithmetic number, because the mean of its divisors is an integer number (1612026).

Almost surely, 2^6428351 is an apocalyptic number.

6428351 is a deficient number, since it is larger than the sum of its proper divisors (19753).

6428351 is a wasteful number, since it uses less digits than its factorization.

6428351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19752.

The product of its digits is 5760, while the sum is 29.

The square root of 6428351 is about 2535.4192947124. The cubic root of 6428351 is about 185.9373030292.

The spelling of 6428351 in words is "six million, four hundred twenty-eight thousand, three hundred fifty-one".