1428250 has 32 divisors (see below), whose sum is σ = 2779920. Its totient is φ = 548800.

The previous prime is 1428247. The next prime is 1428253. The reversal of 1428250 is 528241.

It is an interprime number because it is at equal distance from previous prime (1428247) and next prime (1428253).

It can be written as a sum of positive squares in 8 ways, for example, as 344569 + 1083681 = 587^2 + 1041^2 .

It is not an unprimeable number, because it can be changed into a prime (1428253) 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, 7152 + ... + 7348.

2^1428250 is an apocalyptic number.

1428250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1428250 is a deficient number, since it is larger than the sum of its proper divisors (1351670).

1428250 is a wasteful number, since it uses less digits than its factorization.

1428250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1428250 is about 1195.0941385514. The cubic root of 1428250 is about 112.6163405517.

Subtracting from 1428250 its reverse (528241), we obtain a palindrome (900009).

The spelling of 1428250 in words is "one million, four hundred twenty-eight thousand, two hundred fifty".