Search a number
-
+
1804912904928 = 253729132170111
BaseRepresentation
bin11010010000111101001…
…100010100101011100000
320101112210111001121001110
4122100331030110223200
5214032430200424203
63501055431303320
7244254265362030
oct32207514245340
96345714047043
101804912904928
1163650630a8a1
1225197981ab40
1310128302b143
146350307b8c0
1531e3b008d03
hex1a43d314ae0

1804912904928 has 192 divisors, whose sum is σ = 5605774110720. Its totient is φ = 497522995200.

The previous prime is 1804912904863. The next prime is 1804912904939. The reversal of 1804912904928 is 8294092194081.

It is a congruent number.

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, 25708593 + ... + 25778703.

It is an arithmetic number, because the mean of its divisors is an integer number (29196740160).

Almost surely, 21804912904928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1804912904928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2802887055360).

1804912904928 is an abundant number, since it is smaller than the sum of its proper divisors (3800861205792).

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

1804912904928 is a wasteful number, since it uses less digits than its factorization.

1804912904928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71481 (or 71473 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 57.

The spelling of 1804912904928 in words is "one trillion, eight hundred four billion, nine hundred twelve million, nine hundred four thousand, nine hundred twenty-eight".