1428213 has 8 divisors (see below), whose sum is σ = 1936800. Its totient is φ = 935888.

The previous prime is 1428209. The next prime is 1428233. The reversal of 1428213 is 3128241.

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

It is a cyclic number.

It is not a de Polignac number, because 1428213 - 2² = 1428209 is a prime.

It is an Ulam number.

1428213 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1428213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428233) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3858 + ... + 4211.

It is an arithmetic number, because the mean of its divisors is an integer number (242100).

2^1428213 is an apocalyptic number.

It is an amenable number.

1428213 is a deficient number, since it is larger than the sum of its proper divisors (508587).

1428213 is an equidigital number, since it uses as much as digits as its factorization.

1428213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8131.

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

The square root of 1428213 is about 1195.0786584991. The cubic root of 1428213 is about 112.6153680701.

The spelling of 1428213 in words is "one million, four hundred twenty-eight thousand, two hundred thirteen".