201783223628 has 72 divisors (see below), whose sum is σ = 429654857184. Its totient is φ = 82521331200.

The previous prime is 201783223547. The next prime is 201783223637. The reversal of 201783223628 is 826322387102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1844708 + ... + 1951028.

It is an arithmetic number, because the mean of its divisors is an integer number (5967428572).

Almost surely, 2^201783223628 is an apocalyptic number.

201783223628 is a gapful number since it is divisible by the number (28) 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 201783223628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214827428592).

201783223628 is an abundant number, since it is smaller than the sum of its proper divisors (227871633556).

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

201783223628 is a wasteful number, since it uses less digits than its factorization.

201783223628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106783 (or 106774 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 201783223628 in words is "two hundred one billion, seven hundred eighty-three million, two hundred twenty-three thousand, six hundred twenty-eight".