6428431 has 16 divisors (see below), whose sum is σ = 7293888. Its totient is φ = 5632000.

The previous prime is 6428419. The next prime is 6428447. The reversal of 6428431 is 1348246.

It is a cyclic number.

It is not a de Polignac number, because 6428431 - 2⁵ = 6428399 is a prime.

It is a super-2 number, since 2×6428431² = 82649450243522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6428431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6428131) 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 15 ways as a sum of consecutive naturals, for example, 15831 + ... + 16231.

It is an arithmetic number, because the mean of its divisors is an integer number (455868).

Almost surely, 2^6428431 is an apocalyptic number.

6428431 is a deficient number, since it is larger than the sum of its proper divisors (865457).

6428431 is a wasteful number, since it uses less digits than its factorization.

6428431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482.

The product of its digits is 4608, while the sum is 28.

The square root of 6428431 is about 2535.4350711466. The cubic root of 6428431 is about 185.9380743480.

It can be divided in two parts, 6428 and 431, that added together give a cube (6859 = 19³).

The spelling of 6428431 in words is "six million, four hundred twenty-eight thousand, four hundred thirty-one".