23280529 has 6 divisors (see below), whose sum is σ = 24570690. Its totient is φ = 22054896.

The previous prime is 23280487. The next prime is 23280539. The reversal of 23280529 is 92508232.

It can be written as a sum of positive squares in only one way, i.e., 20793600 + 2486929 = 4560^2 + 1577^2 .

It is not a de Polignac number, because 23280529 - 2¹¹ = 23278481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23280529.

It is not an unprimeable number, because it can be changed into a prime (23280539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31884 + ... + 32605.

It is an arithmetic number, because the mean of its divisors is an integer number (4095115).

Almost surely, 2^23280529 is an apocalyptic number.

It is an amenable number.

23280529 is a deficient number, since it is larger than the sum of its proper divisors (1290161).

23280529 is an equidigital number, since it uses as much as digits as its factorization.

23280529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64527 (or 64508 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 23280529 is about 4824.9900518032. The cubic root of 23280529 is about 285.5382421121.

The spelling of 23280529 in words is "twenty-three million, two hundred eighty thousand, five hundred twenty-nine".