6428840262 has 64 divisors (see below), whose sum is σ = 14801342976. Its totient is φ = 1845930240.

The previous prime is 6428840261. The next prime is 6428840267. The reversal of 6428840262 is 2620488246.

It is a super-2 number, since 2×6428840262² = 82659974228624457288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6428840261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29853 + ... + 117255.

It is an arithmetic number, because the mean of its divisors is an integer number (231270984).

Almost surely, 2^6428840262 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6428840262, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7400671488).

6428840262 is an abundant number, since it is smaller than the sum of its proper divisors (8372502714).

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

6428840262 is a wasteful number, since it uses less digits than its factorization.

6428840262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87485.

The product of its (nonzero) digits is 294912, while the sum is 42.

The square root of 6428840262 is about 80180.0490271738. The cubic root of 6428840262 is about 1859.4202014093.

The spelling of 6428840262 in words is "six billion, four hundred twenty-eight million, eight hundred forty thousand, two hundred sixty-two".