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13030040 = 235325751
BaseRepresentation
bin110001101101…
…001010011000
3220111222212002
4301231022120
511313430130
61143140132
7215516312
oct61551230
926458762
1013030040
11739a731
124444648
132912aaa
141a327b2
151225b45
hexc6d298

13030040 has 16 divisors (see below), whose sum is σ = 29317680. Its totient is φ = 5212000.

The previous prime is 13030037. The next prime is 13030051. The reversal of 13030040 is 4003031.

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 3 ways as a sum of consecutive naturals, for example, 162836 + ... + 162915.

It is an arithmetic number, because the mean of its divisors is an integer number (1832355).

Almost surely, 213030040 is an apocalyptic number.

13030040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13030040 is an abundant number, since it is smaller than the sum of its proper divisors (16287640).

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

13030040 is a wasteful number, since it uses less digits than its factorization.

13030040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325762 (or 325758 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 13030040 is about 3609.7146701644. The cubic root of 13030040 is about 235.3144425090.

Adding to 13030040 its reverse (4003031), we get a palindrome (17033071).

The spelling of 13030040 in words is "thirteen million, thirty thousand, forty".

Divisors: 1 2 4 5 8 10 20 40 325751 651502 1303004 1628755 2606008 3257510 6515020 13030040