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13370081 = 71188311
BaseRepresentation
bin110011000000…
…001011100001
3221011021022012
4303000023201
511410320311
61154322305
7221433554
oct63001341
927137265
1013370081
11760215a
124589395
132a017ba
141ac069b
15129178b
hexcc02e1

13370081 has 4 divisors (see below), whose sum is σ = 13558464. Its totient is φ = 13181700.

The previous prime is 13370029. The next prime is 13370089. The reversal of 13370081 is 18007331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18007331 = 59305209.

It is a cyclic number.

It is not a de Polignac number, because 13370081 - 218 = 13107937 is a prime.

It is a super-2 number, since 2×133700812 = 357518131893122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13370089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94085 + ... + 94226.

It is an arithmetic number, because the mean of its divisors is an integer number (3389616).

Almost surely, 213370081 is an apocalyptic number.

It is an amenable number.

13370081 is a deficient number, since it is larger than the sum of its proper divisors (188383).

13370081 is an equidigital number, since it uses as much as digits as its factorization.

13370081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188382.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 13370081 is about 3656.5121359022. The cubic root of 13370081 is about 237.3438663546.

The spelling of 13370081 in words is "thirteen million, three hundred seventy thousand, eighty-one".

Divisors: 1 71 188311 13370081