Search a number
-
+
389041381872 = 24321121341163257
BaseRepresentation
bin1011010100101001010…
…11000110000111110000
31101012011221222220000100
411222110223012013300
522333224043204442
6454420110552400
740051544120013
oct5522453060760
91335157886010
10389041381872
1113aa9a799400
1263495208700
132a8c0172510
1414b889c537a
15a1be7d084c
hex5a94ac61f0

389041381872 has 720 divisors, whose sum is σ = 1333513962144. Its totient is φ = 105106636800.

The previous prime is 389041381867. The next prime is 389041381877. The reversal of 389041381872 is 278183140983.

It is a happy number.

389041381872 is a `hidden beast` number, since 3 + 89 + 0 + 413 + 81 + 8 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (389041381867) and next prime (389041381877).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389041381877) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1513779568 + ... + 1513779824.

Almost surely, 2389041381872 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 389041381872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (666756981072).

389041381872 is an abundant number, since it is smaller than the sum of its proper divisors (944472580272).

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

389041381872 is a wasteful number, since it uses less digits than its factorization.

389041381872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 389041381872 in words is "three hundred eighty-nine billion, forty-one million, three hundred eighty-one thousand, eight hundred seventy-two".