1282428 has 54 divisors (see below), whose sum is σ = 3776136. Its totient is φ = 365904.

The previous prime is 1282427. The next prime is 1282451. The reversal of 1282428 is 8242821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1282423) 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 17 ways as a sum of consecutive naturals, for example, 1401 + ... + 2127.

2^1282428 is an apocalyptic number.

1282428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1282428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1888068).

1282428 is an abundant number, since it is smaller than the sum of its proper divisors (2493708).

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

1282428 is a wasteful number, since it uses less digits than its factorization.

1282428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751 (or 739 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 1282428 is about 1132.4433760679. The cubic root of 1282428 is about 108.6453134469.

Subtracting from 1282428 its sum of digits (27), we obtain a triangular number (1282401 = T₁₆₀₁).

It can be divided in two parts, 128 and 2428, that added together give a triangular number (2556 = T₇₁).

The spelling of 1282428 in words is "one million, two hundred eighty-two thousand, four hundred twenty-eight".