1428017866 has 8 divisors (see below), whose sum is σ = 2336756544. Its totient is φ = 649099020.

The previous prime is 1428017861. The next prime is 1428017909. The reversal of 1428017866 is 6687108241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1428017861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32454930 + ... + 32454973.

It is an arithmetic number, because the mean of its divisors is an integer number (292094568).

Almost surely, 2^1428017866 is an apocalyptic number.

1428017866 is a deficient number, since it is larger than the sum of its proper divisors (908738678).

1428017866 is a wasteful number, since it uses less digits than its factorization.

1428017866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64909916.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 1428017866 is about 37789.1236468908. The cubic root of 1428017866 is about 1126.1023902928.

The spelling of 1428017866 in words is "one billion, four hundred twenty-eight million, seventeen thousand, eight hundred sixty-six".