1428286920 has 64 divisors (see below), whose sum is σ = 4288662720. Its totient is φ = 380538624.

The previous prime is 1428286861. The next prime is 1428286949. The reversal of 1428286920 is 296828241.

1428286920 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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, 149322 + ... + 158598.

It is an arithmetic number, because the mean of its divisors is an integer number (67010355).

Almost surely, 2^1428286920 is an apocalyptic number.

1428286920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1428286920 is an abundant number, since it is smaller than the sum of its proper divisors (2860375800).

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

1428286920 is a wasteful number, since it uses less digits than its factorization.

1428286920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10574 (or 10570 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 1428286920 is about 37792.6834188841. The cubic root of 1428286920 is about 1126.1731091387.

The spelling of 1428286920 in words is "one billion, four hundred twenty-eight million, two hundred eighty-six thousand, nine hundred twenty".