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23530469 = 64136709
BaseRepresentation
bin101100111000…
…0101111100101
31122021110201212
41121300233211
522010433334
62200201205
7404001644
oct131605745
948243655
1023530469
1112311876
127a69205
134b4b371
1431a735b
1520ebece
hex1670be5

23530469 has 4 divisors (see below), whose sum is σ = 23567820. Its totient is φ = 23493120.

The previous prime is 23530447. The next prime is 23530471. The reversal of 23530469 is 96403532.

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 16507969 + 7022500 = 4063^2 + 2650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23530469 is a prime.

It is a super-2 number, since 2×235304692 = 1107365942719922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23530069) 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, 17714 + ... + 18995.

It is an arithmetic number, because the mean of its divisors is an integer number (5891955).

Almost surely, 223530469 is an apocalyptic number.

It is an amenable number.

23530469 is a deficient number, since it is larger than the sum of its proper divisors (37351).

23530469 is an equidigital number, since it uses as much as digits as its factorization.

23530469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37350.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 23530469 is about 4850.8214768223. The cubic root of 23530469 is about 286.5564540874.

The spelling of 23530469 in words is "twenty-three million, five hundred thirty thousand, four hundred sixty-nine".

Divisors: 1 641 36709 23530469