1428465 has 8 divisors (see below), whose sum is σ = 2285568. Its totient is φ = 761840.

The previous prime is 1428431. The next prime is 1428473. The reversal of 1428465 is 5648241.

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

It is not a de Polignac number, because 1428465 - 2⁸ = 1428209 is a prime.

It is a super-3 number, since 3×1428465³ = 8744401020265333875, which contains 333 as substring.

1428465 is a lucky 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 7 ways as a sum of consecutive naturals, for example, 47601 + ... + 47630.

It is an arithmetic number, because the mean of its divisors is an integer number (285696).

2^1428465 is an apocalyptic number.

1428465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1428465 is a deficient number, since it is larger than the sum of its proper divisors (857103).

1428465 is an equidigital number, since it uses as much as digits as its factorization.

1428465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95239.

The product of its digits is 7680, while the sum is 30.

The square root of 1428465 is about 1195.1840862394. The cubic root of 1428465 is about 112.6219911260.

The spelling of 1428465 in words is "one million, four hundred twenty-eight thousand, four hundred sixty-five".