1428930 has 24 divisors (see below), whose sum is σ = 3715452. Its totient is φ = 381024.

The previous prime is 1428929. The next prime is 1428937. The reversal of 1428930 is 398241.

It can be written as a sum of positive squares in 2 ways, for example, as 1292769 + 136161 = 1137^2 + 369^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1428894 and 1428903.

It is not an unprimeable number, because it can be changed into a prime (1428937) 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 11 ways as a sum of consecutive naturals, for example, 7849 + ... + 8028.

2^1428930 is an apocalyptic number.

1428930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1428930 is an abundant number, since it is smaller than the sum of its proper divisors (2286522).

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

1428930 is a wasteful number, since it uses less digits than its factorization.

1428930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15890 (or 15887 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1428930 is about 1195.3786011135. The cubic root of 1428930 is about 112.6342101967.

The spelling of 1428930 in words is "one million, four hundred twenty-eight thousand, nine hundred thirty".