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23153065 = 5131723911
BaseRepresentation
bin101100001010…
…0100110101001
31121120022000221
41120110212221
521411344230
62144130041
7400540435
oct130244651
947508027
1023153065
1112084271
127906921
134a48650
1431099c5
15207527a
hex16149a9

23153065 has 32 divisors (see below), whose sum is σ = 33094656. Its totient is φ = 15375360.

The previous prime is 23153059. The next prime is 23153087. The reversal of 23153065 is 56035132.

It is a happy number.

It is not a de Polignac number, because 23153065 - 23 = 23153057 is a prime.

It is a Duffinian 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 31 ways as a sum of consecutive naturals, for example, 24960 + ... + 25870.

It is an arithmetic number, because the mean of its divisors is an integer number (1034208).

Almost surely, 223153065 is an apocalyptic number.

It is an amenable number.

23153065 is a deficient number, since it is larger than the sum of its proper divisors (9941591).

23153065 is a wasteful number, since it uses less digits than its factorization.

23153065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 23153065 is about 4811.7631903493. The cubic root of 23153065 is about 285.0161681604.

Adding to 23153065 its reverse (56035132), we get a palindrome (79188197).

The spelling of 23153065 in words is "twenty-three million, one hundred fifty-three thousand, sixty-five".

Divisors: 1 5 13 17 23 65 85 115 221 299 391 911 1105 1495 1955 4555 5083 11843 15487 20953 25415 59215 77435 104765 201331 272389 356201 1006655 1361945 1781005 4630613 23153065