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13440801 = 311261607
BaseRepresentation
bin110011010001…
…011100100001
3221021212022110
4303101130201
511420101201
61200025533
7222150003
oct63213441
927255273
1013440801
117650300
1246022a9
132a27a4a
141adc373
1512a76d6
hexcd1721

13440801 has 24 divisors (see below), whose sum is σ = 20054272. Its totient is φ = 7999200.

The previous prime is 13440781. The next prime is 13440821. The reversal of 13440801 is 10804431.

It is an interprime number because it is at equal distance from previous prime (13440781) and next prime (13440821).

It is not a de Polignac number, because 13440801 - 29 = 13440289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13440821) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 21840 + ... + 22446.

Almost surely, 213440801 is an apocalyptic number.

13440801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13440801 is a deficient number, since it is larger than the sum of its proper divisors (6613471).

13440801 is a wasteful number, since it uses less digits than its factorization.

13440801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 13440801 is about 3666.1697996683. The cubic root of 13440801 is about 237.7616013118.

It can be divided in two parts, 13440 and 801, that added together give a palindrome (14241).

The spelling of 13440801 in words is "thirteen million, four hundred forty thousand, eight hundred one".

Divisors: 1 3 11 33 61 121 183 363 607 671 1821 2013 6677 7381 20031 22143 37027 73447 111081 220341 407297 1221891 4480267 13440801