23280465 has 32 divisors (see below), whose sum is σ = 40352256. Its totient is φ = 11393280.

The previous prime is 23280449. The next prime is 23280469. The reversal of 23280465 is 56408232.

It is not a de Polignac number, because 23280465 - 2⁴ = 23280449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23280469) 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 31 ways as a sum of consecutive naturals, for example, 53800 + ... + 54230.

It is an arithmetic number, because the mean of its divisors is an integer number (1261008).

Almost surely, 2^23280465 is an apocalyptic number.

It is an amenable number.

23280465 is a deficient number, since it is larger than the sum of its proper divisors (17071791).

23280465 is a wasteful number, since it uses less digits than its factorization.

23280465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 23280465 is about 4824.9834196606. The cubic root of 23280465 is about 285.5379804562.

Adding to 23280465 its reverse (56408232), we get a palindrome (79688697).

The spelling of 23280465 in words is "twenty-three million, two hundred eighty thousand, four hundred sixty-five".