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13830481 = 73116353
BaseRepresentation
bin110100110000…
…100101010001
3222000122212001
4310300211101
512020033411
61212234001
7225362050
oct64604521
928018761
1013830481
117897055
12476b901
132b33222
141ba0397
151332dc1
hexd30951

13830481 has 8 divisors (see below), whose sum is σ = 15859584. Its totient is φ = 11814720.

The previous prime is 13830473. The next prime is 13830491. The reversal of 13830481 is 18403831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13830481 - 23 = 13830473 is a prime.

It is a super-2 number, since 2×138304812 = 382564409382722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13830431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000 + ... + 5353.

It is an arithmetic number, because the mean of its divisors is an integer number (1982448).

Almost surely, 213830481 is an apocalyptic number.

It is an amenable number.

13830481 is a deficient number, since it is larger than the sum of its proper divisors (2029103).

13830481 is an equidigital number, since it uses as much as digits as its factorization.

13830481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 13830481 is about 3718.9354659633. The cubic root of 13830481 is about 240.0374999274.

The spelling of 13830481 in words is "thirteen million, eight hundred thirty thousand, four hundred eighty-one".

Divisors: 1 7 311 2177 6353 44471 1975783 13830481