23220130 has 32 divisors (see below), whose sum is σ = 44622576. Its totient is φ = 8669184.

The previous prime is 23220091. The next prime is 23220139. The reversal of 23220130 is 3102232.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 18584721 + 4635409 = 4311^2 + 2153^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23220130.

It is not an unprimeable number, because it can be changed into a prime (23220139) 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, 22792 + ... + 23788.

Almost surely, 2^23220130 is an apocalyptic number.

23220130 is a deficient number, since it is larger than the sum of its proper divisors (21402446).

23220130 is a wasteful number, since it uses less digits than its factorization.

23220130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 23220130 is about 4818.7270103213. The cubic root of 23220130 is about 285.2910948021.

Adding to 23220130 its reverse (3102232), we get a palindrome (26322362).

The spelling of 23220130 in words is "twenty-three million, two hundred twenty thousand, one hundred thirty".