1384221328 has 160 divisors (see below), whose sum is σ = 3440779776. Its totient is φ = 525533184.

The previous prime is 1384221287. The next prime is 1384221343. The reversal of 1384221328 is 8231224831.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 1384221293 and 1384221302.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3196600 + ... + 3197032.

Almost surely, 2^1384221328 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 1384221328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1720389888).

1384221328 is an abundant number, since it is smaller than the sum of its proper divisors (2056558448).

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

1384221328 is a wasteful number, since it uses less digits than its factorization.

1384221328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 555 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 1384221328 is about 37205.1250233083. The cubic root of 1384221328 is about 1114.4703331306.

The spelling of 1384221328 in words is "one billion, three hundred eighty-four million, two hundred twenty-one thousand, three hundred twenty-eight".