1006428 has 12 divisors (see below), whose sum is σ = 2348360. Its totient is φ = 335472.

The previous prime is 1006393. The next prime is 1006433. The reversal of 1006428 is 8246001.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41923 + ... + 41946.

2^1006428 is an apocalyptic number.

It is an amenable number.

1006428 is an abundant number, since it is smaller than the sum of its proper divisors (1341932).

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

1006428 is a wasteful number, since it uses less digits than its factorization.

1006428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83876 (or 83874 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1006428 is about 1003.2088516356. The cubic root of 1006428 is about 100.2138091971.

The spelling of 1006428 in words is "one million, six thousand, four hundred twenty-eight".