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20122283 = 199101117
BaseRepresentation
bin100110011000…
…0101010101011
31101212022120202
41030300222223
520122403113
61555142415
7333015356
oct114605253
941768522
1020122283
11103a4195
1268a4a0b
134226c9c
14295b29d
151b77258
hex1330aab

20122283 has 4 divisors (see below), whose sum is σ = 20223600. Its totient is φ = 20020968.

The previous prime is 20122241. The next prime is 20122343. The reversal of 20122283 is 38222102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38222102 = 219111051.

It is a cyclic number.

It is not a de Polignac number, because 20122283 - 220 = 19073707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122213) 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, 50360 + ... + 50757.

It is an arithmetic number, because the mean of its divisors is an integer number (5055900).

Almost surely, 220122283 is an apocalyptic number.

20122283 is a deficient number, since it is larger than the sum of its proper divisors (101317).

20122283 is a wasteful number, since it uses less digits than its factorization.

20122283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101316.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20122283 is about 4485.7867760294. The cubic root of 20122283 is about 271.9938498826.

Adding to 20122283 its reverse (38222102), we get a palindrome (58344385).

The spelling of 20122283 in words is "twenty million, one hundred twenty-two thousand, two hundred eighty-three".

Divisors: 1 199 101117 20122283