1282730 has 8 divisors (see below), whose sum is σ = 2308932. Its totient is φ = 513088.

The previous prime is 1282717. The next prime is 1282739. The reversal of 1282730 is 372821.

It can be written as a sum of positive squares in 2 ways, for example, as 1100401 + 182329 = 1049^2 + 427^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1282696 and 1282705.

It is not an unprimeable number, because it can be changed into a prime (1282739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64127 + ... + 64146.

2^1282730 is an apocalyptic number.

1282730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1282730 is a deficient number, since it is larger than the sum of its proper divisors (1026202).

1282730 is a wasteful number, since it uses less digits than its factorization.

1282730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128280.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1282730 is about 1132.5767082189. The cubic root of 1282730 is about 108.6538411015.

Subtracting from 1282730 its reverse (372821), we obtain a palindrome (909909).

The spelling of 1282730 in words is "one million, two hundred eighty-two thousand, seven hundred thirty".