7643946228 has 12 divisors (see below), whose sum is σ = 17835874560. Its totient is φ = 2547982072.

The previous prime is 7643946209. The next prime is 7643946257. The reversal of 7643946228 is 8226493467.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×7643946228³ (a number of 31 digits) contains 333 as substring.

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, 318497748 + ... + 318497771.

It is an arithmetic number, because the mean of its divisors is an integer number (1486322880).

Almost surely, 2^7643946228 is an apocalyptic number.

It is an amenable number.

7643946228 is an abundant number, since it is smaller than the sum of its proper divisors (10191928332).

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

7643946228 is a wasteful number, since it uses less digits than its factorization.

7643946228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636995526 (or 636995524 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 51.

The square root of 7643946228 is about 87429.6644623551. The cubic root of 7643946228 is about 1969.8774458877.

The spelling of 7643946228 in words is "seven billion, six hundred forty-three million, nine hundred forty-six thousand, two hundred twenty-eight".