223513020 has 120 divisors (see below), whose sum is σ = 705097008. Its totient is φ = 59270400.

The previous prime is 223513013. The next prime is 223513021. The reversal of 223513020 is 20315322.

223513020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 223512984 and 223513002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223513021) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 454975 + ... + 455465.

Almost surely, 2^223513020 is an apocalyptic number.

223513020 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 223513020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352548504).

223513020 is an abundant number, since it is smaller than the sum of its proper divisors (481583988).

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

223513020 is a wasteful number, since it uses less digits than its factorization.

223513020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 223513020 is about 14950.3518353248. The cubic root of 223513020 is about 606.8773684795.

Adding to 223513020 its reverse (20315322), we get a palindrome (243828342).

The spelling of 223513020 in words is "two hundred twenty-three million, five hundred thirteen thousand, twenty".