Search a number
-
+
78082061000 = 235378082061
BaseRepresentation
bin100100010111000001…
…1011011001011001000
321110112200011200022012
41020232003123023020
52234403001423000
655512001315052
75432642365466
oct1105603331310
9243480150265
1078082061000
1130129319129
1213171635a88
13749498cc78
143aca161836
15206ee1a735
hex122e0db2c8

78082061000 has 32 divisors (see below), whose sum is σ = 182712025080. Its totient is φ = 31232824000.

The previous prime is 78082060967. The next prime is 78082061003. The reversal of 78082061000 is 16028087.

It can be written as a sum of positive squares in 4 ways, for example, as 7860240964 + 70221820036 = 88658^2 + 264994^2 .

It is not an unprimeable number, because it can be changed into a prime (78082061003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39040031 + ... + 39042030.

Almost surely, 278082061000 is an apocalyptic number.

It is an amenable number.

78082061000 is an abundant number, since it is smaller than the sum of its proper divisors (104629964080).

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

78082061000 is a wasteful number, since it uses less digits than its factorization.

78082061000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78082082 (or 78082068 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

Adding to 78082061000 its reverse (16028087), we get a palindrome (78098089087).

The spelling of 78082061000 in words is "seventy-eight billion, eighty-two million, sixty-one thousand".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 1000 78082061 156164122 312328244 390410305 624656488 780820610 1561641220 1952051525 3123282440 3904103050 7808206100 9760257625 15616412200 19520515250 39041030500 78082061000