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17090081 = 23743047
BaseRepresentation
bin100000100110…
…0011000100001
31012011021011222
41001030120201
513333340311
61410144425
7265156211
oct101143041
935137158
1017090081
119713038
125882115
133704a98
1423ac241
151778adb
hex104c621

17090081 has 4 divisors (see below), whose sum is σ = 17833152. Its totient is φ = 16347012.

The previous prime is 17090057. The next prime is 17090111. The reversal of 17090081 is 18009071.

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: 18009071 = 30795849.

It is a cyclic number.

It is not a de Polignac number, because 17090081 - 210 = 17089057 is a prime.

It is a super-2 number, since 2×170900812 = 584141737173122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 17090081.

It is not an unprimeable number, because it can be changed into a prime (17090011) 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, 371501 + ... + 371546.

It is an arithmetic number, because the mean of its divisors is an integer number (4458288).

Almost surely, 217090081 is an apocalyptic number.

It is an amenable number.

17090081 is a deficient number, since it is larger than the sum of its proper divisors (743071).

17090081 is an equidigital number, since it uses as much as digits as its factorization.

17090081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743070.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 17090081 is about 4134.0151185016. The cubic root of 17090081 is about 257.5815231867.

The spelling of 17090081 in words is "seventeen million, ninety thousand, eighty-one".

Divisors: 1 23 743047 17090081