1428878 has 16 divisors (see below), whose sum is σ = 2363904. Its totient is φ = 642360.

The previous prime is 1428863. The next prime is 1428887. The reversal of 1428878 is 8788241.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2051 + ... + 2657.

It is an arithmetic number, because the mean of its divisors is an integer number (147744).

2^1428878 is an apocalyptic number.

1428878 is a deficient number, since it is larger than the sum of its proper divisors (935026).

1428878 is a wasteful number, since it uses less digits than its factorization.

1428878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727.

The product of its digits is 28672, while the sum is 38.

The square root of 1428878 is about 1195.3568504844. The cubic root of 1428878 is about 112.6328438946.

The spelling of 1428878 in words is "one million, four hundred twenty-eight thousand, eight hundred seventy-eight".