1428202881 has 16 divisors (see below), whose sum is σ = 2418121600. Its totient is φ = 816115824.

The previous prime is 1428202837. The next prime is 1428202889. The reversal of 1428202881 is 1882028241.

It is not a de Polignac number, because 1428202881 - 2¹¹ = 1428200833 is a prime.

It is a super-2 number, since 2×1428202881² = 4079526938593400322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428202889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3778126 + ... + 3778503.

It is an arithmetic number, because the mean of its divisors is an integer number (151132600).

Almost surely, 2^1428202881 is an apocalyptic number.

It is an amenable number.

1428202881 is a deficient number, since it is larger than the sum of its proper divisors (989918719).

1428202881 is an equidigital number, since it uses as much as digits as its factorization.

1428202881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7556645 (or 7556639 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 1428202881 is about 37791.5715603360. The cubic root of 1428202881 is about 1126.1510210655.

The spelling of 1428202881 in words is "one billion, four hundred twenty-eight million, two hundred two thousand, eight hundred eighty-one".