1428750866 has 16 divisors (see below), whose sum is σ = 2284483200. Its totient is φ = 668208528.

The previous prime is 1428750863. The next prime is 1428750887. The reversal of 1428750866 is 6680578241.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1428750866.

It is not an unprimeable number, because it can be changed into a prime (1428750863) 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, 234965 + ... + 240968.

It is an arithmetic number, because the mean of its divisors is an integer number (142780200).

Almost surely, 2^1428750866 is an apocalyptic number.

1428750866 is a deficient number, since it is larger than the sum of its proper divisors (855732334).

1428750866 is a wasteful number, since it uses less digits than its factorization.

1428750866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476033.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 1428750866 is about 37798.8209604480. The cubic root of 1428750866 is about 1126.2950330416.

The spelling of 1428750866 in words is "one billion, four hundred twenty-eight million, seven hundred fifty thousand, eight hundred sixty-six".