1428840012 has 24 divisors (see below), whose sum is σ = 3335293696. Its totient is φ = 476089488.

The previous prime is 1428840011. The next prime is 1428840019. The reversal of 1428840012 is 2100488241.

It is not an unprimeable number, because it can be changed into a prime (1428840011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9273 + ... + 54255.

Almost surely, 2^1428840012 is an apocalyptic number.

1428840012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1428840012 is an abundant number, since it is smaller than the sum of its proper divisors (1906453684).

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

1428840012 is a wasteful number, since it uses less digits than its factorization.

1428840012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47637 (or 47635 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 1428840012 is about 37800.0001587302. Note that the first 3 decimals coincide. The cubic root of 1428840012 is about 1126.3184573748.

The spelling of 1428840012 in words is "one billion, four hundred twenty-eight million, eight hundred forty thousand, twelve".