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23195261 = 151153611
BaseRepresentation
bin101100001111…
…0111001111101
31121122102220202
41120132321331
521414222021
62145053245
7401104445
oct130367175
947572822
1023195261
1112102a41
127927225
134a6190b
14311b125
152082a0b
hex161ee7d

23195261 has 4 divisors (see below), whose sum is σ = 23349024. Its totient is φ = 23041500.

The previous prime is 23195243. The next prime is 23195267. The reversal of 23195261 is 16259132.

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.

It is a cyclic number.

It is not a de Polignac number, because 23195261 - 214 = 23178877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23195267) 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, 76655 + ... + 76956.

It is an arithmetic number, because the mean of its divisors is an integer number (5837256).

Almost surely, 223195261 is an apocalyptic number.

It is an amenable number.

23195261 is a deficient number, since it is larger than the sum of its proper divisors (153763).

23195261 is a wasteful number, since it uses less digits than its factorization.

23195261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153762.

The product of its digits is 3240, while the sum is 29.

The square root of 23195261 is about 4816.1458657312. The cubic root of 23195261 is about 285.1892085128.

The spelling of 23195261 in words is "twenty-three million, one hundred ninety-five thousand, two hundred sixty-one".

Divisors: 1 151 153611 23195261