23116220 has 24 divisors (see below), whose sum is σ = 48655824. Its totient is φ = 9225216.

The previous prime is 23116213. The next prime is 23116267. The reversal of 23116220 is 2261132.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9884 + ... + 11996.

It is an arithmetic number, because the mean of its divisors is an integer number (2027326).

Almost surely, 2^23116220 is an apocalyptic number.

23116220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23116220 is an abundant number, since it is smaller than the sum of its proper divisors (25539604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23116220 is a wasteful number, since it uses less digits than its factorization.

23116220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669 (or 2667 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 23116220 is about 4807.9330278198. The cubic root of 23116220 is about 284.8648995461.

Adding to 23116220 its reverse (2261132), we get a palindrome (25377352).

The spelling of 23116220 in words is "twenty-three million, one hundred sixteen thousand, two hundred twenty".