6421792228 has 24 divisors (see below), whose sum is σ = 12283052544. Its totient is φ = 2924534400.

The previous prime is 6421792213. The next prime is 6421792229. The reversal of 6421792228 is 8222971246.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6421792229) 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, 1521088 + ... + 1525303.

It is an arithmetic number, because the mean of its divisors is an integer number (511793856).

Almost surely, 2^6421792228 is an apocalyptic number.

6421792228 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6421792228 is a deficient number, since it is larger than the sum of its proper divisors (5861260316).

6421792228 is a wasteful number, since it uses less digits than its factorization.

6421792228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046443 (or 3046441 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 6421792228 is about 80136.0856792993. The cubic root of 6421792228 is about 1858.7404495231.

The spelling of 6421792228 in words is "six billion, four hundred twenty-one million, seven hundred ninety-two thousand, two hundred twenty-eight".