1428744446 has 8 divisors (see below), whose sum is σ = 2188715040. Its totient is φ = 699172768.

The previous prime is 1428744439. The next prime is 1428744451. The reversal of 1428744446 is 6444478241.

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

It is a junction number, because it is equal to n+sod(n) for n = 1428744397 and 1428744406.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7599611 + ... + 7599798.

It is an arithmetic number, because the mean of its divisors is an integer number (273589380).

Almost surely, 2^1428744446 is an apocalyptic number.

1428744446 is a deficient number, since it is larger than the sum of its proper divisors (759970594).

1428744446 is a wasteful number, since it uses less digits than its factorization.

1428744446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15199458.

The product of its digits is 688128, while the sum is 44.

The square root of 1428744446 is about 37798.7360370688. The cubic root of 1428744446 is about 1126.2933460610.

The spelling of 1428744446 in words is "one billion, four hundred twenty-eight million, seven hundred forty-four thousand, four hundred forty-six".