204773130 has 64 divisors (see below), whose sum is σ = 548208000. Its totient is φ = 54391680.

The previous prime is 204773123. The next prime is 204773141. The reversal of 204773130 is 31377402.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 204773094 and 204773103.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74521 + ... + 77219.

It is an arithmetic number, because the mean of its divisors is an integer number (8565750).

Almost surely, 2^204773130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204773130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274104000).

204773130 is an abundant number, since it is smaller than the sum of its proper divisors (343434870).

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

204773130 is a wasteful number, since it uses less digits than its factorization.

204773130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996 (or 2990 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 204773130 is about 14309.8962260388. The cubic root of 204773130 is about 589.4192600283.

It can be divided in two parts, 2047731 and 30, that added together give a square (2047761 = 1431²).

The spelling of 204773130 in words is "two hundred four million, seven hundred seventy-three thousand, one hundred thirty".