6428020 has 24 divisors (see below), whose sum is σ = 13553568. Its totient is φ = 2560800.

The previous prime is 6428011. The next prime is 6428029. The reversal of 6428020 is 208246.

It is an interprime number because it is at equal distance from previous prime (6428011) and next prime (6428029).

It is a super-2 number, since 2×6428020² = 82638882240800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6427982 and 6428000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6428029) 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, 6135 + ... + 7105.

It is an arithmetic number, because the mean of its divisors is an integer number (564732).

Almost surely, 2^6428020 is an apocalyptic number.

It is an amenable number.

6428020 is an abundant number, since it is smaller than the sum of its proper divisors (7125548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6428020 is a wasteful number, since it uses less digits than its factorization.

6428020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311 (or 1309 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 6428020 is about 2535.3540186727. The cubic root of 6428020 is about 185.9341116300.

The spelling of 6428020 in words is "six million, four hundred twenty-eight thousand, twenty".