223504920 has 160 divisors (see below), whose sum is σ = 759773520. Its totient is φ = 58924800.

The previous prime is 223504909. The next prime is 223504979. The reversal of 223504920 is 29405322.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 326899 + ... + 327581.

Almost surely, 2^223504920 is an apocalyptic number.

223504920 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 223504920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379886760).

223504920 is an abundant number, since it is smaller than the sum of its proper divisors (536268600).

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

223504920 is a wasteful number, since it uses less digits than its factorization.

223504920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 223504920 is about 14950.0809362358. The cubic root of 223504920 is about 606.8700374136.

The spelling of 223504920 in words is "two hundred twenty-three million, five hundred four thousand, nine hundred twenty".