1442857328 has 80 divisors (see below), whose sum is σ = 3179808384. Its totient is φ = 628404480.

The previous prime is 1442857313. The next prime is 1442857333. The reversal of 1442857328 is 8237582441.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434651 + ... + 437957.

Almost surely, 2^1442857328 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 1442857328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1589904192).

1442857328 is an abundant number, since it is smaller than the sum of its proper divisors (1736951056).

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

1442857328 is a wasteful number, since it uses less digits than its factorization.

1442857328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430 (or 3424 counting only the distinct ones).

The product of its digits is 430080, while the sum is 44.

The square root of 1442857328 is about 37984.9618665071. The cubic root of 1442857328 is about 1129.9896435733.

The spelling of 1442857328 in words is "one billion, four hundred forty-two million, eight hundred fifty-seven thousand, three hundred twenty-eight".