1428382816 has 48 divisors (see below), whose sum is σ = 3217493664. Its totient is φ = 611472384.

The previous prime is 1428382799. The next prime is 1428382829. The reversal of 1428382816 is 6182838241.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228306 + ... + 234478.

It is an arithmetic number, because the mean of its divisors is an integer number (67031118).

Almost surely, 2^1428382816 is an apocalyptic number.

1428382816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1428382816 is an abundant number, since it is smaller than the sum of its proper divisors (1789110848).

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

1428382816 is a wasteful number, since it uses less digits than its factorization.

1428382816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7223 (or 7215 counting only the distinct ones).

The product of its digits is 147456, while the sum is 43.

The square root of 1428382816 is about 37793.9521087700. The cubic root of 1428382816 is about 1126.1983125434.

The spelling of 1428382816 in words is "one billion, four hundred twenty-eight million, three hundred eighty-two thousand, eight hundred sixteen".