1282638 has 16 divisors (see below), whose sum is σ = 2931840. Its totient is φ = 366456.

The previous prime is 1282637. The next prime is 1282639. The reversal of 1282638 is 8362821.

It is an interprime number because it is at equal distance from previous prime (1282637) and next prime (1282639).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1282637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15228 + ... + 15311.

It is an arithmetic number, because the mean of its divisors is an integer number (183240).

2^1282638 is an apocalyptic number.

1282638 is an abundant number, since it is smaller than the sum of its proper divisors (1649202).

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

1282638 is a wasteful number, since it uses less digits than its factorization.

1282638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30551.

The product of its digits is 4608, while the sum is 30.

The square root of 1282638 is about 1132.5360921401. The cubic root of 1282638 is about 108.6512434147.

It can be divided in two parts, 128263 and 8, that added together give a triangular number (128271 = T₅₀₆).

The spelling of 1282638 in words is "one million, two hundred eighty-two thousand, six hundred thirty-eight".