6428811 has 8 divisors (see below), whose sum is σ = 8848384. Its totient is φ = 4147560.

The previous prime is 6428809. The next prime is 6428813. The reversal of 6428811 is 1188246.

It is an interprime number because it is at equal distance from previous prime (6428809) and next prime (6428813).

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

It is not a de Polignac number, because 6428811 - 2¹ = 6428809 is a prime.

It is a super-2 number, since 2×6428811² = 82659221747442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6428813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34471 + ... + 34656.

It is an arithmetic number, because the mean of its divisors is an integer number (1106048).

Almost surely, 2^6428811 is an apocalyptic number.

6428811 is a deficient number, since it is larger than the sum of its proper divisors (2419573).

6428811 is a wasteful number, since it uses less digits than its factorization.

6428811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69161.

The product of its digits is 3072, while the sum is 30.

The square root of 6428811 is about 2535.5100078682. The cubic root of 6428811 is about 185.9417380245.

It can be divided in two parts, 642 and 8811, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 6428811 in words is "six million, four hundred twenty-eight thousand, eight hundred eleven".