1006390 has 32 divisors (see below), whose sum is σ = 2260224. Its totient is φ = 313440.

The previous prime is 1006367. The next prime is 1006391. The reversal of 1006390 is 936001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117 + ... + 1423.

It is an arithmetic number, because the mean of its divisors is an integer number (70632).

2^1006390 is an apocalyptic number.

1006390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1006390 is an abundant number, since it is smaller than the sum of its proper divisors (1253834).

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

1006390 is a wasteful number, since it uses less digits than its factorization.

1006390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 1006390 is about 1003.1899122300. The cubic root of 1006390 is about 100.2125479138.

It can be divided in two parts, 10063 and 90, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 1006390 in words is "one million, six thousand, three hundred ninety".