223655020 has 12 divisors (see below), whose sum is σ = 469675584. Its totient is φ = 89462000.

The previous prime is 223655011. The next prime is 223655027. The reversal of 223655020 is 20556322.

223655020 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (223655027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5591356 + ... + 5591395.

It is an arithmetic number, because the mean of its divisors is an integer number (39139632).

Almost surely, 2^223655020 is an apocalyptic number.

223655020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223655020 is an abundant number, since it is smaller than the sum of its proper divisors (246020564).

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

223655020 is a wasteful number, since it uses less digits than its factorization.

223655020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11182760 (or 11182758 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 223655020 is about 14955.1001333993. The cubic root of 223655020 is about 607.0058596418.

The spelling of 223655020 in words is "two hundred twenty-three million, six hundred fifty-five thousand, twenty".