23220466 has 16 divisors (see below), whose sum is σ = 35640000. Its totient is φ = 11342448.

The previous prime is 23220437. The next prime is 23220481. The reversal of 23220466 is 66402232.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 23220466.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 46285 + ... + 46783.

It is an arithmetic number, because the mean of its divisors is an integer number (2227500).

Almost surely, 2^23220466 is an apocalyptic number.

23220466 is a deficient number, since it is larger than the sum of its proper divisors (12419534).

23220466 is a wasteful number, since it uses less digits than its factorization.

23220466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 23220466 is about 4818.7618741747. The cubic root of 23220466 is about 285.2924708688.

Adding to 23220466 its reverse (66402232), we get a palindrome (89622698).

The spelling of 23220466 in words is "twenty-three million, two hundred twenty thousand, four hundred sixty-six".