1428666450 has 24 divisors (see below), whose sum is σ = 3543093168. Its totient is φ = 380977680.

The previous prime is 1428666431. The next prime is 1428666479. The reversal of 1428666450 is 546668241.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4762072 + ... + 4762371.

It is an arithmetic number, because the mean of its divisors is an integer number (147628882).

Almost surely, 2^1428666450 is an apocalyptic number.

1428666450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1428666450 is an abundant number, since it is smaller than the sum of its proper divisors (2114426718).

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

1428666450 is a wasteful number, since it uses less digits than its factorization.

1428666450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9524458 (or 9524453 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 1428666450 is about 37797.7042953669. The cubic root of 1428666450 is about 1126.2728506826.

The spelling of 1428666450 in words is "one billion, four hundred twenty-eight million, six hundred sixty-six thousand, four hundred fifty".