1428446 has 4 divisors (see below), whose sum is σ = 2142672. Its totient is φ = 714222.

The previous prime is 1428431. The next prime is 1428473. The reversal of 1428446 is 6448241.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357110 + ... + 357113.

It is an arithmetic number, because the mean of its divisors is an integer number (535668).

2^1428446 is an apocalyptic number.

1428446 is a deficient number, since it is larger than the sum of its proper divisors (714226).

1428446 is an equidigital number, since it uses as much as digits as its factorization.

1428446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714225.

The product of its digits is 6144, while the sum is 29.

The square root of 1428446 is about 1195.1761376467. The cubic root of 1428446 is about 112.6214917958.

The spelling of 1428446 in words is "one million, four hundred twenty-eight thousand, four hundred forty-six".