1386530 has 16 divisors (see below), whose sum is σ = 2537784. Its totient is φ = 545280.

The previous prime is 1386499. The next prime is 1386551. The reversal of 1386530 is 356831.

It can be written as a sum of positive squares in 4 ways, for example, as 1018081 + 368449 = 1009^2 + 607^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1386530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527 + ... + 1746.

2^1386530 is an apocalyptic number.

1386530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1386530 is a deficient number, since it is larger than the sum of its proper divisors (1151254).

1386530 is a wasteful number, since it uses less digits than its factorization.

1386530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1386530 is about 1177.5100848825. The cubic root of 1386530 is about 111.5089578357.

The spelling of 1386530 in words is "one million, three hundred eighty-six thousand, five hundred thirty".