6428916 has 96 divisors (see below), whose sum is σ = 18972800. Its totient is φ = 1866240.

The previous prime is 6428879. The next prime is 6428921. The reversal of 6428916 is 6198246.

6428916 is a `hidden beast` number, since 642 + 8 + 9 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26556 + ... + 26796.

Almost surely, 2^6428916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6428916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9486400).

6428916 is an abundant number, since it is smaller than the sum of its proper divisors (12543884).

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

6428916 is a wasteful number, since it uses less digits than its factorization.

6428916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 278 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 6428916 is about 2535.5307136771. The cubic root of 6428916 is about 185.9427503308.

The spelling of 6428916 in words is "six million, four hundred twenty-eight thousand, nine hundred sixteen".