23430220 has 24 divisors (see below), whose sum is σ = 53677008. Its totient is φ = 8520000.

The previous prime is 23430191. The next prime is 23430221. The reversal of 23430220 is 2203432.

It is a junction number, because it is equal to n+sod(n) for n = 23430194 and 23430203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23430221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53031 + ... + 53470.

It is an arithmetic number, because the mean of its divisors is an integer number (2236542).

Almost surely, 2^23430220 is an apocalyptic number.

23430220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23430220 is an abundant number, since it is smaller than the sum of its proper divisors (30246788).

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

23430220 is a wasteful number, since it uses less digits than its factorization.

23430220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106521 (or 106519 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 23430220 is about 4840.4772491976. The cubic root of 23430220 is about 286.1489272777.

Adding to 23430220 its reverse (2203432), we get a palindrome (25633652).

The spelling of 23430220 in words is "twenty-three million, four hundred thirty thousand, two hundred twenty".