2228684840 has 32 divisors (see below), whose sum is σ = 5131162080. Its totient is φ = 870741312.

The previous prime is 2228684839. The next prime is 2228684893. The reversal of 2228684840 is 484868222.

It is a super-2 number, since 2×2228684840² = 9934072232091651200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2228684791 and 2228684800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646154 + ... + 649593.

It is an arithmetic number, because the mean of its divisors is an integer number (160348815).

Almost surely, 2^2228684840 is an apocalyptic number.

2228684840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2228684840 is an abundant number, since it is smaller than the sum of its proper divisors (2902477240).

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

2228684840 is a wasteful number, since it uses less digits than its factorization.

2228684840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295801 (or 1295797 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 44.

The square root of 2228684840 is about 47208.9487279689. The cubic root of 2228684840 is about 1306.2196707319.

The spelling of 2228684840 in words is "two billion, two hundred twenty-eight million, six hundred eighty-four thousand, eight hundred forty".