1428219 has 24 divisors (see below), whose sum is σ = 2298480. Its totient is φ = 876096.

The previous prime is 1428209. The next prime is 1428233. The reversal of 1428219 is 9128241.

It is not a de Polignac number, because 1428219 - 2⁸ = 1427963 is a prime.

It is a super-2 number, since 2×1428219² = 4079619023922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1428192 and 1428201.

It is not an unprimeable number, because it can be changed into a prime (1428209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4407 + ... + 4719.

It is an arithmetic number, because the mean of its divisors is an integer number (95770).

2^1428219 is an apocalyptic number.

1428219 is a deficient number, since it is larger than the sum of its proper divisors (870261).

1428219 is a wasteful number, since it uses less digits than its factorization.

1428219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 329 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1428219 is about 1195.0811687915. The cubic root of 1428219 is about 112.6155257709.

The spelling of 1428219 in words is "one million, four hundred twenty-eight thousand, two hundred nineteen".