223555420 has 48 divisors (see below), whose sum is σ = 517267296. Its totient is φ = 80480000.

The previous prime is 223555417. The next prime is 223555429. The reversal of 223555420 is 24555322.

It is a super-2 number, since 2×223555420² = 99954051622752800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223555429) 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, 17190 + ... + 27250.

It is an arithmetic number, because the mean of its divisors is an integer number (10776402).

Almost surely, 2^223555420 is an apocalyptic number.

223555420 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 223555420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258633648).

223555420 is an abundant number, since it is smaller than the sum of its proper divisors (293711876).

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

223555420 is a wasteful number, since it uses less digits than its factorization.

223555420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10182 (or 10180 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 223555420 is about 14951.7697949106. The cubic root of 223555420 is about 606.9157405522.

The spelling of 223555420 in words is "two hundred twenty-three million, five hundred fifty-five thousand, four hundred twenty".