223508500 has 48 divisors (see below), whose sum is σ = 498580992. Its totient is φ = 87492000.

The previous prime is 223508491. The next prime is 223508501. The reversal of 223508500 is 5805322.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223508501) 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, 18745 + ... + 28255.

It is an arithmetic number, because the mean of its divisors is an integer number (10387104).

Almost surely, 2^223508500 is an apocalyptic number.

223508500 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 223508500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249290496).

223508500 is an abundant number, since it is smaller than the sum of its proper divisors (275072492).

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

223508500 is a wasteful number, since it uses less digits than its factorization.

223508500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9577 (or 9565 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 223508500 is about 14950.2006675496. The cubic root of 223508500 is about 606.8732775856.

The spelling of 223508500 in words is "two hundred twenty-three million, five hundred eight thousand, five hundred".