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23486081 = 24739497
BaseRepresentation
bin101100110010…
…1111010000001
31122012012211212
41121211322001
522003023311
62155215505
7403425353
oct131457201
948165755
1023486081
1112291493
127a47595
134b340b8
1431950d3
1520ddc8b
hex1665e81

23486081 has 4 divisors (see below), whose sum is σ = 23498052. Its totient is φ = 23474112.

The previous prime is 23486077. The next prime is 23486093. The reversal of 23486081 is 18068432.

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 8151025 + 15335056 = 2855^2 + 3916^2 .

It is a cyclic number.

It is not a de Polignac number, because 23486081 - 22 = 23486077 is a prime.

It is a super-2 number, since 2×234860812 = 1103192001477122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23486051) 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, 2276 + ... + 7221.

It is an arithmetic number, because the mean of its divisors is an integer number (5874513).

Almost surely, 223486081 is an apocalyptic number.

It is an amenable number.

23486081 is a deficient number, since it is larger than the sum of its proper divisors (11971).

23486081 is an equidigital number, since it uses as much as digits as its factorization.

23486081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11970.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 23486081 is about 4846.2440095398. The cubic root of 23486081 is about 286.3761534677.

The spelling of 23486081 in words is "twenty-three million, four hundred eighty-six thousand, eighty-one".

Divisors: 1 2473 9497 23486081