6428333784 has 16 divisors (see below), whose sum is σ = 16070834520. Its totient is φ = 2142777920.

The previous prime is 6428333771. The next prime is 6428333833. The reversal of 6428333784 is 4873338246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133923597 + ... + 133923644.

Almost surely, 2^6428333784 is an apocalyptic number.

It is an amenable number.

6428333784 is an abundant number, since it is smaller than the sum of its proper divisors (9642500736).

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

6428333784 is a wasteful number, since it uses less digits than its factorization.

6428333784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267847250 (or 267847246 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 48.

The square root of 6428333784 is about 80176.8905857542. The cubic root of 6428333784 is about 1859.3713704061.

The spelling of 6428333784 in words is "six billion, four hundred twenty-eight million, three hundred thirty-three thousand, seven hundred eighty-four".