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23630461 = 97243613
BaseRepresentation
bin101101000100…
…1001001111101
31122110112220021
41122021021331
522022133321
62202252141
7404566321
oct132111175
948415807
1023630461
111237aa08
127ab7051
134b84a2a
1431d1981
15211b941
hex168927d

23630461 has 4 divisors (see below), whose sum is σ = 23874172. Its totient is φ = 23386752.

The previous prime is 23630423. The next prime is 23630513. The reversal of 23630461 is 16403632.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14516100 + 9114361 = 3810^2 + 3019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23630461 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 (23633461) 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, 121710 + ... + 121903.

It is an arithmetic number, because the mean of its divisors is an integer number (5968543).

Almost surely, 223630461 is an apocalyptic number.

It is an amenable number.

23630461 is a deficient number, since it is larger than the sum of its proper divisors (243711).

23630461 is an equidigital number, since it uses as much as digits as its factorization.

23630461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243710.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 23630461 is about 4861.1172584088. The cubic root of 23630461 is about 286.9617847436.

The spelling of 23630461 in words is "twenty-three million, six hundred thirty thousand, four hundred sixty-one".

Divisors: 1 97 243613 23630461