1020386 has 8 divisors (see below), whose sum is σ = 1572060. Its totient is φ = 496368.

The previous prime is 1020379. The next prime is 1020389. The reversal of 1020386 is 6830201.

It can be written as a sum of positive squares in 2 ways, for example, as 755161 + 265225 = 869^2 + 515^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1020389) 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 3 ways as a sum of consecutive naturals, for example, 6821 + ... + 6968.

2^1020386 is an apocalyptic number.

1020386 is a deficient number, since it is larger than the sum of its proper divisors (551674).

1020386 is a wasteful number, since it uses less digits than its factorization.

1020386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13828.

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

The square root of 1020386 is about 1010.1415742360. The cubic root of 1020386 is about 100.6749672750.

Adding to 1020386 its reverse (6830201), we get a palindrome (7850587).

The spelling of 1020386 in words is "one million, twenty thousand, three hundred eighty-six".