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23163005 = 538911909
BaseRepresentation
bin101100001011…
…1000001111101
31121120210200002
41120113001331
521412204010
62144244045
7400611425
oct130270175
947523602
1023163005
1112090788
127910625
134a50028
14310d485
1520781a5
hex161707d

23163005 has 8 divisors (see below), whose sum is σ = 27869400. Its totient is φ = 18481216.

The previous prime is 23162941. The next prime is 23163013. The reversal of 23163005 is 50036132.

It can be written as a sum of positive squares in 4 ways, for example, as 228484 + 22934521 = 478^2 + 4789^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 23163005 - 26 = 23162941 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4010 + ... + 7899.

It is an arithmetic number, because the mean of its divisors is an integer number (3483675).

Almost surely, 223163005 is an apocalyptic number.

It is an amenable number.

23163005 is a deficient number, since it is larger than the sum of its proper divisors (4706395).

23163005 is a wasteful number, since it uses less digits than its factorization.

23163005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12303.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 23163005 is about 4812.7959649252. The cubic root of 23163005 is about 285.0569497356.

Adding to 23163005 its reverse (50036132), we get a palindrome (73199137).

It can be divided in two parts, 231 and 63005, that added together give a palindrome (63236).

The spelling of 23163005 in words is "twenty-three million, one hundred sixty-three thousand, five".

Divisors: 1 5 389 1945 11909 59545 4632601 23163005