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80239626756 = 2234157372
BaseRepresentation
bin100101010111010100…
…1111000101000000100
321200010001000101010000
41022232221320220010
52303312321024011
6100510033401300
75540261400612
oct1125651705004
9250101011100
1080239626756
11310361a5223
1213674109230
137749984ab3
143c529146b2
152149554356
hex12aea78a04

80239626756 has 45 divisors (see below), whose sum is σ = 209775564229. Its totient is φ = 26744842656.

The previous prime is 80239626751. The next prime is 80239626763. The reversal of 80239626756 is 65762693208.

The square root of 80239626756 is 283266.

It is a perfect power (a square), and thus also a powerful number.

80239626756 is a `hidden beast` number, since 8 + 0 + 2 + 3 + 9 + 626 + 7 + 5 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 73045872900 + 7193753856 = 270270^2 + 84816^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80239626751) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 5090920 + ... + 5106656.

Almost surely, 280239626756 is an apocalyptic number.

80239626756 is the 283266-th square number.

It is an amenable number.

80239626756 is an abundant number, since it is smaller than the sum of its proper divisors (129535937473).

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

80239626756 is an frugal number, since it uses more digits than its factorization.

80239626756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31490 (or 15742 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 80239626756 in words is "eighty billion, two hundred thirty-nine million, six hundred twenty-six thousand, seven hundred fifty-six".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 324 15737 31474 47211 62948 94422 141633 188844 283266 424899 566532 849798 1274697 1699596 2549394 5098788 247653169 495306338 742959507 990612676 1485919014 2228878521 2971838028 4457757042 6686635563 8915514084 13373271126 20059906689 26746542252 40119813378 80239626756