1323390 has 32 divisors (see below), whose sum is σ = 3280896. Its totient is φ = 341280.

The previous prime is 1323389. The next prime is 1323409. The reversal of 1323390 is 933231.

It is a super-2 number, since 2×1323390² = 3502722184200, which contains 22 as substring.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 219 + ... + 1641.

It is an arithmetic number, because the mean of its divisors is an integer number (102528).

2^1323390 is an apocalyptic number.

1323390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1640448).

1323390 is an abundant number, since it is smaller than the sum of its proper divisors (1957506).

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

1323390 is a wasteful number, since it uses less digits than its factorization.

1323390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464.

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 1323390 is about 1150.3868914413. The cubic root of 1323390 is about 109.7899573099.

The spelling of 1323390 in words is "one million, three hundred twenty-three thousand, three hundred ninety".