Search a number
-
+
389381372992 = 2659103120067
BaseRepresentation
bin1011010101010001111…
…00000011110001000000
31101020001122202020011001
411222220330003301000
522334423112413432
6454513534101344
740063143026533
oct5525074036100
91336048666131
10389381372992
111401546a77a7
126356b04a854
132a945732ab1
1414bbbc08a1a
15a1de58d9e7
hex5aa8f03c40

389381372992 has 28 divisors (see below), whose sum is σ = 785774918160. Its totient is φ = 191390842496.

The previous prime is 389381372959. The next prime is 389381372993. The reversal of 389381372992 is 299273183983.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is not an unprimeable number, because it can be changed into a prime (389381372993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51556258 + ... + 51563809.

Almost surely, 2389381372992 is an apocalyptic number.

389381372992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

389381372992 is an abundant number, since it is smaller than the sum of its proper divisors (396393545168).

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

389381372992 is a wasteful number, since it uses less digits than its factorization.

389381372992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103120138 (or 103120128 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 64.

The spelling of 389381372992 in words is "three hundred eighty-nine billion, three hundred eighty-one million, three hundred seventy-two thousand, nine hundred ninety-two".

Divisors: 1 2 4 8 16 32 59 64 118 236 472 944 1888 3776 103120067 206240134 412480268 824960536 1649921072 3299842144 6084083953 6599684288 12168167906 24336335812 48672671624 97345343248 194690686496 389381372992