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20930119 = 72990017
BaseRepresentation
bin100111111010…
…1111001000111
31110101100201121
41033311321013
520324230434
62024334411
7342621520
oct117657107
943340647
1020930119
11108a6121
127014407
13444a8b2
142acb847
151c867b4
hex13f5e47

20930119 has 4 divisors (see below), whose sum is σ = 23920144. Its totient is φ = 17940096.

The previous prime is 20930113. The next prime is 20930159. The reversal of 20930119 is 91103902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91103902 = 245551951.

It is a cyclic number.

It is not a de Polignac number, because 20930119 - 29 = 20929607 is a prime.

It is a super-2 number, since 2×209301192 = 876139762708322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20930093 and 20930102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20930113) 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, 1495002 + ... + 1495015.

It is an arithmetic number, because the mean of its divisors is an integer number (5980036).

Almost surely, 220930119 is an apocalyptic number.

20930119 is a deficient number, since it is larger than the sum of its proper divisors (2990025).

20930119 is an equidigital number, since it uses as much as digits as its factorization.

20930119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990024.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 20930119 is about 4574.9446991193. The cubic root of 20930119 is about 275.5860515577.

The spelling of 20930119 in words is "twenty million, nine hundred thirty thousand, one hundred nineteen".

Divisors: 1 7 2990017 20930119