Search a number
-
+
86870073888 = 25351319311459
BaseRepresentation
bin101000011100111011…
…1000010001000100000
322022020010100222200000
41100321313002020200
52410402214331023
6103524011100000
76163502305353
oct1207167021040
9268203328600
1086870073888
113392898a2a4
1214a04741600
138265549ab0
1442c135429a
1523d66c1243
hex1439dc2220

86870073888 has 576 divisors, whose sum is σ = 299987251200. Its totient is φ = 24488801280.

The previous prime is 86870073887. The next prime is 86870073937. The reversal of 86870073888 is 88837007868.

It is not an unprimeable number, because it can be changed into a prime (86870073887) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 59540103 + ... + 59541561.

It is an arithmetic number, because the mean of its divisors is an integer number (520811200).

Almost surely, 286870073888 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 86870073888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149993625600).

86870073888 is an abundant number, since it is smaller than the sum of its proper divisors (213117177312).

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

86870073888 is a wasteful number, since it uses less digits than its factorization.

86870073888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 63.

The spelling of 86870073888 in words is "eighty-six billion, eight hundred seventy million, seventy-three thousand, eight hundred eighty-eight".