1228239384 has 64 divisors (see below), whose sum is σ = 3141815040. Its totient is φ = 399984000.

The previous prime is 1228239379. The next prime is 1228239449. The reversal of 1228239384 is 4839328221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317349 + ... + 321195.

It is an arithmetic number, because the mean of its divisors is an integer number (49090860).

Almost surely, 2^1228239384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228239384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1570907520).

1228239384 is an abundant number, since it is smaller than the sum of its proper divisors (1913575656).

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

1228239384 is a wasteful number, since it uses less digits than its factorization.

1228239384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4160 (or 4156 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 1228239384 is about 35046.2463610584. The cubic root of 1228239384 is about 1070.9298069757.

The spelling of 1228239384 in words is "one billion, two hundred twenty-eight million, two hundred thirty-nine thousand, three hundred eighty-four".