1428220069346 has 48 divisors (see below), whose sum is σ = 2635025621760. Its totient is φ = 577278303840.

The previous prime is 1428220069343. The next prime is 1428220069379. The reversal of 1428220069346 is 6439600228241.

It is a self number, because there is not a number n which added to its sum of digits gives 1428220069346.

It is not an unprimeable number, because it can be changed into a prime (1428220069343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1304585 + ... + 2135036.

It is an arithmetic number, because the mean of its divisors is an integer number (54896367120).

Almost surely, 2^{1428220069346} is an apocalyptic number.

1428220069346 is a deficient number, since it is larger than the sum of its proper divisors (1206805552414).

1428220069346 is a wasteful number, since it uses less digits than its factorization.

1428220069346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439879 (or 3439872 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 1428220069346 in words is "one trillion, four hundred twenty-eight billion, two hundred twenty million, sixty-nine thousand, three hundred forty-six".