204973928988 has 24 divisors (see below), whose sum is σ = 499066958208. Its totient is φ = 65354006256.

The previous prime is 204973928977. The next prime is 204973928989. The reversal of 204973928988 is 889829379402.

It is a super-3 number, since 3×204973928988³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204973928989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371329306 + ... + 371329857.

It is an arithmetic number, because the mean of its divisors is an integer number (20794456592).

Almost surely, 2^204973928988 is an apocalyptic number.

It is an amenable number.

204973928988 is an abundant number, since it is smaller than the sum of its proper divisors (294093029220).

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

204973928988 is a wasteful number, since it uses less digits than its factorization.

204973928988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742659193 (or 742659191 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 69.

The spelling of 204973928988 in words is "two hundred four billion, nine hundred seventy-three million, nine hundred twenty-eight thousand, nine hundred eighty-eight".