1428115 has 16 divisors (see below), whose sum is σ = 1870848. Its totient is φ = 1040256.

The previous prime is 1428113. The next prime is 1428127. The reversal of 1428115 is 5118241.

It is a cyclic number.

It is not a de Polignac number, because 1428115 - 2¹ = 1428113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428113) 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, 8169 + ... + 8341.

It is an arithmetic number, because the mean of its divisors is an integer number (116928).

2^1428115 is an apocalyptic number.

1428115 is a deficient number, since it is larger than the sum of its proper divisors (442733).

1428115 is a wasteful number, since it uses less digits than its factorization.

1428115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318.

The product of its digits is 320, while the sum is 22.

The square root of 1428115 is about 1195.0376563105. The cubic root of 1428115 is about 112.6127922268.

The spelling of 1428115 in words is "one million, four hundred twenty-eight thousand, one hundred fifteen".