210223420 has 48 divisors (see below), whose sum is σ = 486422496. Its totient is φ = 75680000.

The previous prime is 210223379. The next prime is 210223423. The reversal of 210223420 is 24322012.

It is a junction number, because it is equal to n+sod(n) for n = 210223394 and 210223403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210223423) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17490 + ... + 26950.

It is an arithmetic number, because the mean of its divisors is an integer number (10133802).

Almost surely, 2^210223420 is an apocalyptic number.

210223420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210223420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243211248).

210223420 is an abundant number, since it is smaller than the sum of its proper divisors (276199076).

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

210223420 is a wasteful number, since it uses less digits than its factorization.

210223420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9582 (or 9580 counting only the distinct ones).

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

The square root of 210223420 is about 14499.0834193062. The cubic root of 210223420 is about 594.6029127952.

Adding to 210223420 its reverse (24322012), we get a palindrome (234545432).

It can be divided in two parts, 21022 and 3420, that added together give a palindrome (24442).

The spelling of 210223420 in words is "two hundred ten million, two hundred twenty-three thousand, four hundred twenty".