1428163 has 16 divisors (see below), whose sum is σ = 1668960. Its totient is φ = 1219680.

The previous prime is 1428157. The next prime is 1428169. The reversal of 1428163 is 3618241.

It is an interprime number because it is at equal distance from previous prime (1428157) and next prime (1428169).

It is not a de Polignac number, because 1428163 - 2¹⁷ = 1297091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38581 + ... + 38617.

It is an arithmetic number, because the mean of its divisors is an integer number (104310).

2^1428163 is an apocalyptic number.

1428163 is a deficient number, since it is larger than the sum of its proper divisors (240797).

1428163 is an equidigital number, since it uses as much as digits as its factorization.

1428163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 77 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 1428163 is about 1195.0577391909. The cubic root of 1428163 is about 112.6140538790.

The spelling of 1428163 in words is "one million, four hundred twenty-eight thousand, one hundred sixty-three".