23214220 has 24 divisors (see below), whose sum is σ = 48989808. Its totient is φ = 9240000.

The previous prime is 23214211. The next prime is 23214223. The reversal of 23214220 is 2241232.

It is a junction number, because it is equal to n+sod(n) for n = 23214194 and 23214203.

It is not an unprimeable number, because it can be changed into a prime (23214223) 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, 1470 + ... + 6970.

It is an arithmetic number, because the mean of its divisors is an integer number (2041242).

Almost surely, 2^23214220 is an apocalyptic number.

23214220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23214220 is an abundant number, since it is smaller than the sum of its proper divisors (25775588).

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

23214220 is a wasteful number, since it uses less digits than its factorization.

23214220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5721 (or 5719 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 23214220 is about 4818.1137387986. The cubic root of 23214220 is about 285.2668886006.

Adding to 23214220 its reverse (2241232), we get a palindrome (25455452).

The spelling of 23214220 in words is "twenty-three million, two hundred fourteen thousand, two hundred twenty".