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23233489 = 66135149
BaseRepresentation
bin101100010100…
…0001111010001
31121201101100121
41120220033101
521421432424
62145550241
7401324056
oct130501721
947641317
1023233489
1112129734
127945381
134a76136
14312b02d
15208dee4
hex16283d1

23233489 has 4 divisors (see below), whose sum is σ = 23269300. Its totient is φ = 23197680.

The previous prime is 23233487. The next prime is 23233499. The reversal of 23233489 is 98433232.

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 18318400 + 4915089 = 4280^2 + 2217^2 .

It is a cyclic number.

It is not a de Polignac number, because 23233489 - 21 = 23233487 is a prime.

It is a super-2 number, since 2×232334892 = 1079590022226242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23233487) 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, 16914 + ... + 18235.

It is an arithmetic number, because the mean of its divisors is an integer number (5817325).

Almost surely, 223233489 is an apocalyptic number.

It is an amenable number.

23233489 is a deficient number, since it is larger than the sum of its proper divisors (35811).

23233489 is an equidigital number, since it uses as much as digits as its factorization.

23233489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35810.

The product of its digits is 31104, while the sum is 34.

The square root of 23233489 is about 4820.1129654812. The cubic root of 23233489 is about 285.3457955162.

The spelling of 23233489 in words is "twenty-three million, two hundred thirty-three thousand, four hundred eighty-nine".

Divisors: 1 661 35149 23233489