1428303144 has 64 divisors (see below), whose sum is σ = 3789469440. Its totient is φ = 447068160.

The previous prime is 1428303143. The next prime is 1428303187. The reversal of 1428303144 is 4413038241.

It is not an unprimeable number, because it can be changed into a prime (1428303143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185124 + ... + 192684.

It is an arithmetic number, because the mean of its divisors is an integer number (59210460).

Almost surely, 2^1428303144 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 1428303144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1894734720).

1428303144 is an abundant number, since it is smaller than the sum of its proper divisors (2361166296).

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

1428303144 is a wasteful number, since it uses less digits than its factorization.

1428303144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8050 (or 8046 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 1428303144 is about 37792.8980629959. The cubic root of 1428303144 is about 1126.1773732127.

The spelling of 1428303144 in words is "one billion, four hundred twenty-eight million, three hundred three thousand, one hundred forty-four".