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23141765 = 520692237
BaseRepresentation
bin101100001000…
…1110110000101
31121112201112102
41120101312011
521411014030
62144001445
7400462463
oct130216605
947481472
1023141765
1112076829
127900285
134a4346a
143105833
152071c45
hex1611d85

23141765 has 8 divisors (see below), whose sum is σ = 27795960. Its totient is φ = 18496192.

The previous prime is 23141737. The next prime is 23141771. The reversal of 23141765 is 56714132.

It can be written as a sum of positive squares in 4 ways, for example, as 1898884 + 21242881 = 1378^2 + 4609^2 .

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 23141765 - 214 = 23125381 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9227 + ... + 11463.

It is an arithmetic number, because the mean of its divisors is an integer number (3474495).

Almost surely, 223141765 is an apocalyptic number.

It is an amenable number.

23141765 is a deficient number, since it is larger than the sum of its proper divisors (4654195).

23141765 is a wasteful number, since it uses less digits than its factorization.

23141765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311.

The product of its digits is 5040, while the sum is 29.

The square root of 23141765 is about 4810.5888412958. The cubic root of 23141765 is about 284.9697926330.

Adding to 23141765 its reverse (56714132), we get a palindrome (79855897).

The spelling of 23141765 in words is "twenty-three million, one hundred forty-one thousand, seven hundred sixty-five".

Divisors: 1 5 2069 2237 10345 11185 4628353 23141765