1428806160 has 60 divisors (see below), whose sum is σ = 4798409772. Its totient is φ = 381014784.

The previous prime is 1428806129. The next prime is 1428806167. The reversal of 1428806160 is 616088241.

1428806160 is a `hidden beast` number, since 14 + 28 + 8 + 0 + 616 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 893531664 + 535274496 = 29892^2 + 23136^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1428806167) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 991507 + ... + 992946.

Almost surely, 2^1428806160 is an apocalyptic number.

1428806160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428806160 is an abundant number, since it is smaller than the sum of its proper divisors (3369603612).

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

1428806160 is a wasteful number, since it uses less digits than its factorization.

1428806160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984472 (or 1984463 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1428806160 is about 37799.5523783020. The cubic root of 1428806160 is about 1126.3095624126.

The spelling of 1428806160 in words is "one billion, four hundred twenty-eight million, eight hundred six thousand, one hundred sixty".