1428192666 has 48 divisors (see below), whose sum is σ = 3176993664. Its totient is φ = 463468032.

The previous prime is 1428192641. The next prime is 1428192707. The reversal of 1428192666 is 6662918241.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158905 + ... + 167651.

It is an arithmetic number, because the mean of its divisors is an integer number (66187368).

Almost surely, 2^1428192666 is an apocalyptic number.

1428192666 is an abundant number, since it is smaller than the sum of its proper divisors (1748800998).

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

1428192666 is a wasteful number, since it uses less digits than its factorization.

1428192666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8995 (or 8992 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 1428192666 is about 37791.4364109119. The cubic root of 1428192666 is about 1126.1483361855.

The spelling of 1428192666 in words is "one billion, four hundred twenty-eight million, one hundred ninety-two thousand, six hundred sixty-six".