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8081238885 = 352394914591
BaseRepresentation
bin1111000011010110…
…11110101101100101
3202212012021110200220
413201223132231211
5113022244121020
63413520554553
7404155253136
oct74153365545
922765243626
108081238885
113477715425
121696482a59
139ba318375
145693b3c8d
153246e6240
hex1e1adeb65

8081238885 has 32 divisors (see below), whose sum is σ = 13013360640. Its totient is φ = 4282286400.

The previous prime is 8081238833. The next prime is 8081238887. The reversal of 8081238885 is 5888321808.

It is not a de Polignac number, because 8081238885 - 211 = 8081236837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8081238887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1757940 + ... + 1762530.

It is an arithmetic number, because the mean of its divisors is an integer number (406667520).

Almost surely, 28081238885 is an apocalyptic number.

It is an amenable number.

8081238885 is a deficient number, since it is larger than the sum of its proper divisors (4932121755).

8081238885 is a wasteful number, since it uses less digits than its factorization.

8081238885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329.

The product of its (nonzero) digits is 983040, while the sum is 51.

The square root of 8081238885 is about 89895.7111602105. The cubic root of 8081238885 is about 2006.7471196753.

The spelling of 8081238885 in words is "eight billion, eighty-one million, two hundred thirty-eight thousand, eight hundred eighty-five".

Divisors: 1 3 5 15 239 491 717 1195 1473 2455 3585 4591 7365 13773 22955 68865 117349 352047 586745 1097249 1760235 2254181 3291747 5486245 6762543 11270905 16458735 33812715 538749259 1616247777 2693746295 8081238885