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23263481 = 29802189
BaseRepresentation
bin101100010111…
…1100011111001
31121202220111102
41120233203321
521423412411
62150341145
7401510363
oct130574371
947686442
1023263481
111214a21a
12795a7b5
134a86997
143137d33
152097d3b
hex162f8f9

23263481 has 4 divisors (see below), whose sum is σ = 24065700. Its totient is φ = 22461264.

The previous prime is 23263469. The next prime is 23263501. The reversal of 23263481 is 18436232.

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 16933225 + 6330256 = 4115^2 + 2516^2 .

It is a cyclic number.

It is not a de Polignac number, because 23263481 - 218 = 23001337 is a prime.

It is a super-2 number, since 2×232634812 = 1082379096474722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 802189 = 23263481 / (2 + 3 + 2 + 6 + 3 + 4 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23263451) 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, 401066 + ... + 401123.

It is an arithmetic number, because the mean of its divisors is an integer number (6016425).

Almost surely, 223263481 is an apocalyptic number.

It is an amenable number.

23263481 is a deficient number, since it is larger than the sum of its proper divisors (802219).

23263481 is an equidigital number, since it uses as much as digits as its factorization.

23263481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802218.

The product of its digits is 6912, while the sum is 29.

The square root of 23263481 is about 4823.2230924974. The cubic root of 23263481 is about 285.4685265620.

The spelling of 23263481 in words is "twenty-three million, two hundred sixty-three thousand, four hundred eighty-one".

Divisors: 1 29 802189 23263481