6428616 has 32 divisors (see below), whose sum is σ = 16146240. Its totient is φ = 2132928.

The previous prime is 6428573. The next prime is 6428623. The reversal of 6428616 is 6168246.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6165 + ... + 7131.

It is an arithmetic number, because the mean of its divisors is an integer number (504570).

Almost surely, 2^6428616 is an apocalyptic number.

It is an amenable number.

6428616 is an abundant number, since it is smaller than the sum of its proper divisors (9717624).

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

6428616 is a wasteful number, since it uses less digits than its factorization.

6428616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253 (or 1249 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 6428616 is about 2535.4715537746. The cubic root of 6428616 is about 185.9398579980.

It can be divided in two parts, 64 and 28616, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 6428616 in words is "six million, four hundred twenty-eight thousand, six hundred sixteen".