1428888 has 32 divisors (see below), whose sum is σ = 3697200. Its totient is φ = 459648.

The previous prime is 1428887. The next prime is 1428893. The reversal of 1428888 is 8888241.

It is a nude number because it is divisible by every one of its digits.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331 + ... + 1722.

2^1428888 is an apocalyptic number.

It is an amenable number.

1428888 is an abundant number, since it is smaller than the sum of its proper divisors (2268312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1428888 is a wasteful number, since it uses less digits than its factorization.

1428888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091 (or 2087 counting only the distinct ones).

The product of its digits is 32768, while the sum is 39.

The square root of 1428888 is about 1195.3610333284. The cubic root of 1428888 is about 112.6331066476.

The spelling of 1428888 in words is "one million, four hundred twenty-eight thousand, eight hundred eighty-eight".