1228666384 has 20 divisors (see below), whose sum is σ = 2596954320. Its totient is φ = 558484640.

The previous prime is 1228666379. The next prime is 1228666427. The reversal of 1228666384 is 4836668221.

It is a super-3 number, since 3×1228666384³ (a number of 28 digits) contains 333 as substring.

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, 3490354 + ... + 3490705.

It is an arithmetic number, because the mean of its divisors is an integer number (129847716).

Almost surely, 2^1228666384 is an apocalyptic number.

It is an amenable number.

1228666384 is an abundant number, since it is smaller than the sum of its proper divisors (1368287936).

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

1228666384 is a wasteful number, since it uses less digits than its factorization.

1228666384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6981078 (or 6981072 counting only the distinct ones).

The product of its digits is 663552, while the sum is 46.

The square root of 1228666384 is about 35052.3377822364. The cubic root of 1228666384 is about 1071.0538962620.

The spelling of 1228666384 in words is "one billion, two hundred twenty-eight million, six hundred sixty-six thousand, three hundred eighty-four".