23061220 has 48 divisors (see below), whose sum is σ = 59609088. Its totient is φ = 7297920.

The previous prime is 23061209. The next prime is 23061221. The reversal of 23061220 is 2216032.

It is a junction number, because it is equal to n+sod(n) for n = 23061194 and 23061203.

It is not an unprimeable number, because it can be changed into a prime (23061221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4516 + ... + 8155.

It is an arithmetic number, because the mean of its divisors is an integer number (1241856).

Almost surely, 2^23061220 is an apocalyptic number.

23061220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23061220 is an abundant number, since it is smaller than the sum of its proper divisors (36547868).

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

23061220 is a wasteful number, since it uses less digits than its factorization.

23061220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12700 (or 12698 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 23061220 is about 4802.2099079486. The cubic root of 23061220 is about 284.6387955121.

Adding to 23061220 its reverse (2216032), we get a palindrome (25277252).

The spelling of 23061220 in words is "twenty-three million, sixty-one thousand, two hundred twenty".