1428847 has 16 divisors (see below), whose sum is σ = 1723392. Its totient is φ = 1159200.

The previous prime is 1428839. The next prime is 1428851. The reversal of 1428847 is 7488241.

It is not a de Polignac number, because 1428847 - 2³ = 1428839 is a prime.

It is a Duffinian number.

1428847 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14097 + ... + 14197.

It is an arithmetic number, because the mean of its divisors is an integer number (107712).

2^1428847 is an apocalyptic number.

1428847 is a deficient number, since it is larger than the sum of its proper divisors (294545).

1428847 is a wasteful number, since it uses less digits than its factorization.

1428847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198.

The product of its digits is 14336, while the sum is 34.

The square root of 1428847 is about 1195.3438835749. The cubic root of 1428847 is about 112.6320293526.

The spelling of 1428847 in words is "one million, four hundred twenty-eight thousand, eight hundred forty-seven".