1380026 has 16 divisors (see below), whose sum is σ = 2253096. Its totient is φ = 631296.

The previous prime is 1380013. The next prime is 1380031. The reversal of 1380026 is 6200831.

It can be written as a sum of positive squares in 4 ways, for example, as 1357225 + 22801 = 1165^2 + 151^2 .

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 710 + ... + 1806.

2^1380026 is an apocalyptic number.

1380026 is a deficient number, since it is larger than the sum of its proper divisors (873070).

1380026 is a wasteful number, since it uses less digits than its factorization.

1380026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1380026 is about 1174.7450787298. The cubic root of 1380026 is about 111.3343273444.

Adding to 1380026 its reverse (6200831), we get a palindrome (7580857).

The spelling of 1380026 in words is "one million, three hundred eighty thousand, twenty-six".