220285356 has 12 divisors (see below), whose sum is σ = 513999192. Its totient is φ = 73428448.

The previous prime is 220285321. The next prime is 220285357. The reversal of 220285356 is 653582022.

220285356 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (220285357) 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, 9178545 + ... + 9178568.

It is an arithmetic number, because the mean of its divisors is an integer number (42833266).

Almost surely, 2^220285356 is an apocalyptic number.

It is an amenable number.

220285356 is an abundant number, since it is smaller than the sum of its proper divisors (293713836).

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

220285356 is a wasteful number, since it uses less digits than its factorization.

220285356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18357120 (or 18357118 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 220285356 is about 14842.0132057615. The cubic root of 220285356 is about 603.9419669986.

The spelling of 220285356 in words is "two hundred twenty million, two hundred eighty-five thousand, three hundred fifty-six".