1023340 has 24 divisors (see below), whose sum is σ = 2262960. Its totient is φ = 387648.

The previous prime is 1023329. The next prime is 1023353. The reversal of 1023340 is 433201.

It is a self number, because there is not a number n which added to its sum of digits gives 1023340.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 967 + ... + 1726.

It is an arithmetic number, because the mean of its divisors is an integer number (94290).

2^1023340 is an apocalyptic number.

1023340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023340 is an abundant number, since it is smaller than the sum of its proper divisors (1239620).

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

1023340 is a wasteful number, since it uses less digits than its factorization.

1023340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721 (or 2719 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1023340 is about 1011.6026888062. The cubic root of 1023340 is about 100.7720244445.

Adding to 1023340 its reverse (433201), we get a palindrome (1456541).

The spelling of 1023340 in words is "one million, twenty-three thousand, three hundred forty".