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20760297 = 331223229
BaseRepresentation
bin100111100110…
…0011011101001
31110001201202220
41033030123221
520303312142
62020544253
7341313435
oct117143351
943051686
1020760297
111079a578
126b52089
1343bb4cc
142a859c5
151c512ec
hex13cc6e9

20760297 has 8 divisors (see below), whose sum is σ = 28573440. Its totient is φ = 13393680.

The previous prime is 20760269. The next prime is 20760301. The reversal of 20760297 is 79206702.

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

It is not a de Polignac number, because 20760297 - 215 = 20727529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20760097) 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, 111522 + ... + 111707.

It is an arithmetic number, because the mean of its divisors is an integer number (3571680).

Almost surely, 220760297 is an apocalyptic number.

It is an amenable number.

20760297 is a deficient number, since it is larger than the sum of its proper divisors (7813143).

20760297 is a wasteful number, since it uses less digits than its factorization.

20760297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223263.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 20760297 is about 4556.3468919739. The cubic root of 20760297 is about 274.8386800410.

Adding to 20760297 its reverse (79206702), we get a palindrome (99966999).

The spelling of 20760297 in words is "twenty million, seven hundred sixty thousand, two hundred ninety-seven".

Divisors: 1 3 31 93 223229 669687 6920099 20760297