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13240368 = 243330649
BaseRepresentation
bin110010100000…
…100000110000
3220220200101000
4302200200300
511342142433
61151442000
7220353441
oct62404060
926820330
1013240368
117523759
124526300
13298774b
141a892c8
151268113
hexca0830

13240368 has 40 divisors (see below), whose sum is σ = 38006000. Its totient is φ = 4413312.

The previous prime is 13240363. The next prime is 13240369. The reversal of 13240368 is 86304231.

It is a happy number.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13240363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14893 + ... + 15756.

It is an arithmetic number, because the mean of its divisors is an integer number (950150).

Almost surely, 213240368 is an apocalyptic number.

13240368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13240368 is an abundant number, since it is smaller than the sum of its proper divisors (24765632).

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

13240368 is a wasteful number, since it uses less digits than its factorization.

13240368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30666 (or 30654 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 13240368 is about 3638.7316471540. The cubic root of 13240368 is about 236.5738215019.

Adding to 13240368 its reverse (86304231), we get a palindrome (99544599).

The spelling of 13240368 in words is "thirteen million, two hundred forty thousand, three hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 432 30649 61298 91947 122596 183894 245192 275841 367788 490384 551682 735576 827523 1103364 1471152 1655046 2206728 3310092 4413456 6620184 13240368