Search a number
-
+
389383470720 = 273251931114773
BaseRepresentation
bin1011010101010010001…
…00000011111010000000
31101020001210200210200200
411222221010003322000
522334424132030340
6454514051045200
740063166614416
oct5525104037200
91336053623620
10389383470720
111401558aa862
126356b8a0800
132a945cb885a
1414bbc1d32b6
15a1de855330
hex5aa9103e80

389383470720 has 384 divisors, whose sum is σ = 1461027110400. Its totient is φ = 95196487680.

The previous prime is 389383470649. The next prime is 389383470727. The reversal of 389383470720 is 27074383983.

389383470720 is a `hidden beast` number, since 3 + 8 + 93 + 83 + 470 + 7 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is not an unprimeable number, because it can be changed into a prime (389383470727) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3335254 + ... + 3450026.

It is an arithmetic number, because the mean of its divisors is an integer number (3804758100).

Almost surely, 2389383470720 is an apocalyptic number.

389383470720 is a gapful number since it is divisible by the number (30) 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 389383470720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730513555200).

389383470720 is an abundant number, since it is smaller than the sum of its proper divisors (1071643639680).

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

389383470720 is a wasteful number, since it uses less digits than its factorization.

389383470720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114848 (or 114833 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 389383470720 in words is "three hundred eighty-nine billion, three hundred eighty-three million, four hundred seventy thousand, seven hundred twenty".