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1323040 = 2558269
BaseRepresentation
bin101000011000000100000
32111012212111
411003000200
5314314130
644205104
714150155
oct5030040
92435774
101323040
11824024
12539794
13374284
1426622c
151b202a
hex143020

1323040 has 24 divisors (see below), whose sum is σ = 3126060. Its totient is φ = 529152.

The previous prime is 1323017. The next prime is 1323041. The reversal of 1323040 is 403231.

It can be written as a sum of positive squares in 2 ways, for example, as 1281424 + 41616 = 1132^2 + 204^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1323040.

It is not an unprimeable number, because it can be changed into a prime (1323041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3975 + ... + 4294.

21323040 is an apocalyptic number.

1323040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323040 is an abundant number, since it is smaller than the sum of its proper divisors (1803020).

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

1323040 is an equidigital number, since it uses as much as digits as its factorization.

1323040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8284 (or 8276 counting only the distinct ones).

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

The square root of 1323040 is about 1150.2347586471. The cubic root of 1323040 is about 109.7802776556.

Adding to 1323040 its reverse (403231), we get a palindrome (1726271).

The spelling of 1323040 in words is "one million, three hundred twenty-three thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 8269 16538 33076 41345 66152 82690 132304 165380 264608 330760 661520 1323040