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23742853 = 28378369
BaseRepresentation
bin101101010010…
…0100110000101
31122200021001221
41122210212011
522034232403
62204520341
7405545101
oct132444605
948607057
1023742853
11124473a2
127b500b1
134bc3c34
143220901
15213edbd
hex16a4985

23742853 has 4 divisors (see below), whose sum is σ = 23754060. Its totient is φ = 23731648.

The previous prime is 23742827. The next prime is 23742871. The reversal of 23742853 is 35824732.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7606564 + 16136289 = 2758^2 + 4017^2 .

It is a cyclic number.

It is not a de Polignac number, because 23742853 - 25 = 23742821 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 (23742253) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1348 + ... + 7021.

It is an arithmetic number, because the mean of its divisors is an integer number (5938515).

Almost surely, 223742853 is an apocalyptic number.

It is an amenable number.

23742853 is a deficient number, since it is larger than the sum of its proper divisors (11207).

23742853 is an equidigital number, since it uses as much as digits as its factorization.

23742853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11206.

The product of its digits is 40320, while the sum is 34.

The square root of 23742853 is about 4872.6638505031. The cubic root of 23742853 is about 287.4160178142.

The spelling of 23742853 in words is "twenty-three million, seven hundred forty-two thousand, eight hundred fifty-three".

Divisors: 1 2837 8369 23742853