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20416153 = 22789939
BaseRepresentation
bin100110111100…
…0011010011001
31102102020200211
41031320122121
520211304103
62005331121
7335351212
oct115703231
942366624
1020416153
1110584a5a
126a06aa1
1342ca984
1429d6409
151bd436d
hex1378699

20416153 has 4 divisors (see below), whose sum is σ = 20506320. Its totient is φ = 20325988.

The previous prime is 20416141. The next prime is 20416163. The reversal of 20416153 is 35161402.

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: 35161402 = 217580701.

It is a cyclic number.

It is not a de Polignac number, because 20416153 - 29 = 20415641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20416163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44743 + ... + 45196.

It is an arithmetic number, because the mean of its divisors is an integer number (5126580).

Almost surely, 220416153 is an apocalyptic number.

It is an amenable number.

20416153 is a deficient number, since it is larger than the sum of its proper divisors (90167).

20416153 is an equidigital number, since it uses as much as digits as its factorization.

20416153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90166.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20416153 is about 4518.4237295765. The cubic root of 20416153 is about 273.3115408298.

Adding to 20416153 its reverse (35161402), we get a palindrome (55577555).

The spelling of 20416153 in words is "twenty million, four hundred sixteen thousand, one hundred fifty-three".

Divisors: 1 227 89939 20416153